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	Problème avec rapport point, prix...		2005-09-08
		Nico pose la question : Le prix d'un diamant est proportionnel au carré de son poinds. Un diamant de 0.45 g vaut 7500euros. 1. Combie coute un diamant de 0.693 g ? 2. Quel est le poids d'une diamant valant 45000 euros ? Je vous demande pas de le raisoudre à ma place mais j'aimeré comprendre comment je peut calculé le rapport entre le point et le prix. Claude Tardif lui répond.
	Point de partage		2000-02-21
		Sebastian Murciano pose la question : J'aurais besoin de savoir où je peux trouver de l'informations, ou est-ce que vous pouvez me donner de l'information sur : Point de partage d'un segment étudié en Secondaire 4. Claude Tardif lui répond.
	The sides of a 5-pointed star inscribed in a circle		2021-09-18
		Scott pose la question : Is there a calculation for the length of each side of a five-pointed star? I am not worried about area but if I have a circle with a 7.5 foot radius and place a star inside it, how can I measure the lines creating the star? Harley Weston lui répond.
	A confusing problem		2020-10-01
		Kgaugelo pose la question : a triangle has the vertices A(-4;-3),B(x;y)and C(2;1). Determine the coordinates of B if the equation of the line BC is y=5x-9 Harley Weston lui répond.
	A point on a line		2020-01-25
		Samved pose la question : The line 3x/5 - 2y/3 + 1 = 0 contains the point (m, 2m-1). Calculate the value of 'm'. Penny Nom lui répond.
	(3d) Whether line segment intersects triangle		2019-04-13
		rj pose la question : Well hello, Lets say I have a triangle, Not any ordinary triangle, but a triangle that is represented in 3 dimensions. I also have a line segment. Lets say that this triangle has points A(0,0,0), B(1,0,0), C(0,1,1) And the line segment has points D(0,1/2,0), E(1,1/2,1) In what way can I find if the line segment and triangle intersect? Their intersection point? I don't prefer matrices, because they don't make any sense, but ... if that's the only way to solve this, then do what's necessary. Thank you in advance. Penny Nom lui répond.
	The point-slope equation for a line		2018-09-23
		Sally pose la question : The equation of the line in point-slope form for the line passing through the point ( 4, -6) and parallel to the line y = -6x + 2. Describe the steps. Penny Nom lui répond.
	A locus of points		2018-09-03
		Ericka pose la question : Find the locus of points three times as far from (0,4) as from (2,0) Penny Nom lui répond.
	The intersection of a curve and a line		2018-03-08
		lola pose la question : find the set of values of constant C for which the line y=x+c intersects the curve y=2 square root x at, at two distinct points Penny Nom lui répond.
	The product of the coordinates of a point on a line		2018-01-17
		Sophia pose la question : For any point on line l, the product of the x-coordinate and the y-coordinate is less than or equal to zero , what is the answer? Penny Nom lui répond.
	The distance between the origin and a moving point on a graph		2017-10-16
		Paulina pose la question : Find the rate of change of the distance between the origin and a moving point on the graph of y=x^2 +1 if dx/dt=2 centimeters per second Penny Nom lui répond.
	Why does 10x10x10 give 1,000.0000000000001?		2017-04-12
		Randolph pose la question : Hi, On your calculator I found that a box 10 by 10 by 10 inches has a volume of 1,000.0000000000001 cubic inches. Can you explain the numeral 1 thirteen places past the decimal? Thanks, Randy Penny Nom lui répond.
	Can you construct a regular 21-gon?		2016-03-08
		Peter pose la question : hi, i know that if i use a compass to draw a circle, i can use the same setting to mark 6 intervals along the circle circumference, how would i go about marking out 21 equally spaced points around the circumference? if there an online calculator i can us, or some other interesting trick? tia peter Robert Dawson lui répond.
	A metal gate		2016-02-06
		Carl pose la question : I am a welder and I build gates. I have to put holes in a rail and then bend the rail in a curve. The problem is that the holes in the curved rail must line up with holes in the other straight rails. How do I calculate where to put the holes in the rail before I bend it? I will send a drawing if necessary. Harley Weston lui répond.
	The midpoints of the sides of a quadrilateral		2016-02-05
		Andrea pose la question : The segments, joining, in order the midpoints of consecutive sides of a quadrilateral form a parallelogram. Penny Nom lui répond.
	An 8 pointed star inscribed in a circle		2015-04-10
		Kermit pose la question : How do you find the area of the star that is formed by two squares and surrounded by a circle. The only given information is that the radius of the circle is 10. Penny Nom lui répond.
	A tangent to y=x^3 passes through (0,2)		2015-04-05
		Kevin pose la question : Given that the curve y=x^3 has a tangent line that passes through point (0,2). Find the equation of the tangent line Penny Nom lui répond.
	A circle through 3 points		2014-12-04
		priyanka pose la question : Find the equation of a circle passing through the origin and intercept on axes are a and b. Penny Nom lui répond.
	Three collinear points		2014-08-28
		jhanavi pose la question : p,q,r are three collinear points.p and q are(3,4) and (7,7) respectively and PR is equal to 10 units.find coordinates of R Penny Nom lui répond.
	A circle through three points		2014-02-22
		Mohammad pose la question : Find the equation of circle passing through the origin and the points (a,b) and (b,a). Find the length of chords that it cuts off from the axes. Chris Fisher lui répond.
	Distance from a point to a line		2013-12-28
		Sue pose la question : I need to find the distances from the west line on 1st Take Point and 2nd Take Point. Thanks, Sue Penny Nom lui répond.
	Inflection Point		2013-11-15
		Z. pose la question : I was wondering if the function F(x)= x/ln(x) had an inflection point? If yes, why it's not visible on the graph of the function? Thanks. Penny Nom lui répond.
	Intersection points and diagonals		2013-09-11
		Kenneth pose la question : I was wondering, is there a relationship between the number of sides of a regular n-gon and the number of times its diagonals intersect? Ie: 4 sides=1 intersect (center, diagonals form an 'X' ) 5 sides=5 intersects (diagonals form a star) 6 sides=13 intersects And so on. Chris Fisher lui répond.
	Percent and percentage point		2013-07-19
		Kenneth pose la question : Hello: Does 0.01 represent both one percentage point and one percent in decimal form? What is, for example, 2/100 of one percentage point, and what is 2/100 of one percent? Are the answers the same. I thank you for your assistance. Penny Nom lui répond.
	Points of intersection		2013-05-02
		Bianca pose la question : Find the sets of values of k for which the line y=kx-4 intersects the curve y=x^2-2x at two distinct points. Penny Nom lui répond.
	Is a line lying in a plane an open or a closed region?		2013-02-13
		pardeep pose la question : please help with this question on the open and closed intervals :: Is a line lying in a plane an open or a closed region? my teacher says it is a closed region reasoning out that it contains all it boundary points. please help how is it so? Harley Weston lui répond.
	A 5 pointed star in a circle		2012-08-05
		wiljohn pose la question : find the area of a 5 pointed star in the circle with a radius of 12.517 Chris Fisher lui répond.
	Points per quarter		2012-05-14
		debbie pose la question : A basketball team scores 216 points in 8 quarters . Find the teams point per quarters rate Penny Nom lui répond.
	Simplify the expression		2012-02-12
		Christy pose la question : Hi guys, ok so I'm having problems with solving this equation since it's been so long I've done precal. I have to find critical points so I have to find the derivative first. This is what I've done so far s(t)= (t-6)^4 * (t+1)^2 t'= 4(t-6)^3*(1)*(t+1)^2+ 2(t+1)(1)*(t-6)^4 so this is where I got stuck, which is the algebra part. How can I simplify this to get the answer to figure out the critical points. Penny Nom lui répond.
	Two circles		2012-02-08
		crisfe pose la question : find the point where the common cord of the circles x2+y2=25, x2+y2-12x-6y+35=0 process there line centers. what point they intercepts? Penny Nom lui répond.
	Two line segments in the plane		2011-08-15
		Tim pose la question : For this problem I actually have tried to visualise the image in my head many times. This question makes my head spin. Four points lie in a plane. They are partitioned into two pairs so that the sum of the lengths of the segments joining the points of each pair has the minimal possible value. Prove that these segments have no common points. Chris Fisher lui répond.
	A point on a circle		2011-08-02
		George pose la question : I know the center location (x,y) of the circle, I know the radius of the circle, I know the location (X,Y) of one point on the circle, and I know the angle (in degrees not radians) between the known point location (X,Y) and an unknown point location (let's call it (A,B) for reference). What formula(s) can I use to find out the coordinate position of (A,B)? Chris Fisher lui répond.
	Points on a graph		2011-02-15
		Maggie pose la question : Which set of ordered pairs can be used to graph y = -2x-1. A.(-5,9),(1,-3),(4,9) B. (-2,-5),(1,-1),(5,9) C.(-2,-5),(0,-1),(4,-3) D. (-5,9),(-2,3),(4,-9) I cannot figure it out. Could you help me? Penny Nom lui répond.
	A tangent line		2011-01-03
		Amanda pose la question : Question from Amanda, a student: an equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is (A) y=-6x-6 (B) y= -3x+1 (C) y= 2x+10 (D) y=3x-1 (E) y=4x+1 Penny Nom lui répond.
	Determine if a point is inside a cube		2010-11-24
		Ali pose la question : hi every one i have a problem with cube they told me to write a program that determine if a point is inside a cube so i need the equation of the cube to do the comparison. in sphere it is easy sqrt((x-xp)+(y-yp)+(z-zp))<=radios if u please could help me Robert Dawson lui répond.
	3 equidistant points on a circle		2010-06-21
		Brian pose la question : We have to line up 3 pins on a lifting bridle to be 120 degrees apart from each other to connect into a lifting assembly. I know pi*d. I know straight lines connecting these points to each other will result in an equilateral triangle. How does one find these points without using a protractor? There must be a formula (formulae) to work this out mathematically. r = 10.5 inches pi*d = 65.9736 3 segments( arcs) = 21.9912 which is the distance along the circumference that the points are from each other. Penny Nom lui répond.
	The minimum point of a quadratic		2009-12-31
		rachel pose la question : y=0.0008x^2-0.384x What is the minimum point of this equation? Penny Nom lui répond.
	A linear equation		2009-10-22
		Ryan pose la question : How do you convert the equation 2x-6y=7? This is on my homework and I am really stuck!!! Penny Nom lui répond.
	A parabolic bridge		2009-10-03
		SANDRA pose la question : a bridge is constructed across the river that is 200 feet wide. the arch is parabolic so that the focus is on the water. A sheep 50 ft wide and 30 ft high passes safely through the arch a) find equation of the arch *y-k=(-1/4)(x-h)^2 b) find the highest point of the arch Stephen La Rocque lui répond.
	The midpoints of two sides of a triangle		2009-03-17
		Manis pose la question : Prove that the line joining the midpoint of two sides of a triangle is parallel to the third and half of it. Robert Dawson lui répond.
	A line in slope intercept form		2008-12-08
		laurie pose la question : the question: Write and equation of the line that passes through the point and has the give slope. Then rewrite the equation in slope intercept form. (2, 5 ) m= 3 Penny Nom lui répond.
	3 equidistant points		2008-12-01
		Damien pose la question : How do you find 3 equidistant points (C,D,E) on a line between point A(Xa, Ya) and point B(Xb, Yb) so that AC, CD, DE and EB are all equal? Chris Fisher lui répond.
	The midpoint o a line segment		2008-11-15
		Jane pose la question : The vertices of a triangle are at (1,7), (6,-1) and (0,3). Find the coordinates of the midpoints of the sides. Penny Nom lui répond.
	A circle tangent to a line and with its centre on another line		2008-11-01
		liza pose la question : Find the equation of the circle of radius squareroot 26 tangent to the line 5x+y=13 and having its center on the line 3x+y+7=0. Chris Fisher lui répond.
	The standard form Ax+By=C		2008-09-26
		Susan pose la question : I am having difficulty changing the point-slope form of the equation of the line y-y1=m(x-x1) to the standard form Ax+By=C. You must express A,B,C in terms of the constants m,x1,y1. I have been able to insert numbers and switch easily from the general to the point slope equation, but I am stumped on how to convert it this way. Penny Nom lui répond.
	A line through two points		2008-09-10
		Conor pose la question : Find the equation of the straight line which passes through the points (-2,14) and (8,-1) Penny Nom lui répond.
	A tangent to a curve through a point not on the curve		2008-07-23
		Carter pose la question : How does one find the tangent points on a curve, given only the curve's function and the x-intercept of that tangent line? i.e. Find the point(s) on the curve y = -(x^2) + 1, where the tangent line passes through the point (2, 0). I know that there will be two such points, one where y is very close to 1, and the other point where y is a large negative number. However, I do not recall how to figure out the tangent line equation given a single intercept and solving to find the tangent points. Penny Nom lui répond.
	The midpoints of the sides of a quadrilateral		2008-07-22
		JOEL pose la question : A QUADRILATERAL A,B,C,D HAS THE CO -ORDINATE [2,5],[8,7],[10,3]&[0,1] RESPECTIVLY [B,E,G,H] ARE THE MID POINTS OF THE SIDES AB,BC,CD&DA RESPECTIVLY FIND THE MID POINTS OF [FG]&[FH] Penny Nom lui répond.
	A point on a graph		2008-07-08
		Rita pose la question : If (2, b) is a point on the graph of y = (x^2) + 4x, find the value of b. Leeanne Boehm lui répond.
	Points on a graph		2008-07-03
		Rita pose la question : Dertermine if the given 3 points are on the graph of the equation. Equation: y = (x^3) - [2(sqrt{x})] Points: (0, 0); (1, 1); (1, -1) Penny Nom lui répond.
	The area of a 5-point star		2008-06-27
		rebecca pose la question : Hello, For a maths extension program i've been given the challenge of finding the area of a 5-point star with each of the 10 outside edges being a length of 1.23cm How might I go about finding the area for such a shape given only this piece of information? Sincerely, Rebecca Janice Cotcher lui répond.
	The shortest distance from a point to a line		2008-04-03
		Katherine pose la question : How do I find the shortest distance from the point (3,5) to the line x = -2 Stephen La Rocque lui répond.
	The equation of a line		2008-02-17
		Jennifer pose la question : Given the point A(3,2)B(5,8) find the equation of the line AB ( in standard form ) Penny Nom lui répond.
	The slope intercept form of a line		2008-02-17
		chris pose la question : find the slope and y intercept of the line (2x+4)-3y=11(x-1) is this equation in slope point form. Penny Nom lui répond.
	Inflection points		2008-01-25
		Armando pose la question : Hi, Im trying to write a program that takes an equation ( f(x) = 0 ) and returns a list of the inflexion points in a given interval. there must be (I think) a mathematical method or algorithm to do this, probably involving the (second) derivate of the function. However I have not found such a method yet. Any help on this will be much appreciated. Stephen La Rocque and Harley Weston lui répond.
	Maximum volume of a box		2008-01-15
		Rajesh pose la question : A square piece of a cardboard of sides ten inches has four equal peices are removed at the corners, then the sides are turned up to form an open box. What is the maximum volume such a box can have? Stephen La Rocque lui répond.
	Smallest cone containing a 4cm radius inscribed sphere		2007-12-19
		Eva pose la question : A sphere with a radius of 4cm is inscribed into a cone. Find the minimum volume of the cone. Stephen La Rocque lui répond.
	Find the radius of a circle given the center and a point on the circle		2007-11-18
		Raymund pose la question : Find the radius if the center is at (0, -5) and one point on the circle is (2,3) Stephen La Rocque lui répond.
	Local maxima, minima and inflection points		2007-11-13
		Russell pose la question : let f(x) = x^3 - 3a^2^ x +2a^4 with a parameter a > 1. Find the coordinates of local minimum and local maximum Find the coordinates of the inflection points Harley Weston lui répond.
	Find the equation of a line given two points		2007-10-05
		Tiffany pose la question : The equation for the line through the points (11,2) and (18,12) can be written in the form Ax+By=C. Find A and B. Victoria West lui répond.
	Points that are 15 units from the origin		2007-09-20
		Paula pose la question : Find the coordinates of any point(s) 15 units away from the origin with an x-coordinate of 9. I was given the answer: (9,12) and (9,-12), but I do not understand how these numbers were calculated. Thank you for your help! Stephen La Rocque lui répond.
	Point-slope form		2007-08-16
		jenny pose la question : write an equation in the point-slope form and the intercept form slope=4,passing through (1,3) slope=8,passing through (4,-1) slope= -5,passing through (-4,-2) slope= -2,passing through(0,-3) Leeanne Boehm lui répond.
	Slopes of a triangle's medians		2007-08-11
		Gina pose la question : I am trying to help my daughter with this, but I am very weak in Math.Please help! Find slopes of the medians of a triangle whose vertices are P(1,3), Q(3,5), and R(6,2) Stephen La Rocque lui répond.
	Points in a plane		2007-06-01
		Gabrielle pose la question : In general how many planes are there which contain two given points, three given points, and four given points? Steve La Rocque and Walter Whiteley lui répond.
	A set of points in space		2007-04-04
		Lenny pose la question : What is a set of points in space the same given distance from its center point called? Stephen La Rocque lui répond.
	Area of a five-pointed star		2007-03-05
		Ashley pose la question : What is the area of a five pointed star inscribed in a circle with a radius of 10cm? Stephen La Rocque lui répond.
	Maximizing profit		2007-01-23
		Denise pose la question : Total Profit= Total Revenue-Total Cost P(x)=R(x)-C(x) Where x is the number of units sold. Find the maximum profit and the number of units that must be sold in order to get that profit. R(x)=5x C(x)=.001x^2+1.2x+60 Stephen La Rocque lui répond.
	Points of intersection		2007-01-18
		Mark pose la question : Find the points of intersection of the given pair of curves. 2x - 3y = -8 and 3x - 5y = -13 Steve La Rocque and Haley Ess lui répond.
	Points of intersection		2006-08-20
		Gianella pose la question : Find the points of intersection by solving this problem analytically. y= x cubed y= x Stephen La Rocque lui répond.
	Find the points of intersection		2006-08-18
		Ingrid pose la question : The question says find the points of intersection of the graphs of the equation, and check your results analytically. x squared + y squared=25 2x+ y=10 Stephen La Rocque lui répond.
	What's the difference between percentages and points?		2006-04-21
		Sayed pose la question : What is the difference between percentages and points? Stephen La Rocque lui répond.
	Equation of a line in Ax + By = C form		2006-04-19
		Christopher pose la question : How do you write the equation of a line with a slope of 3/8 and passing through (-4,6) in Ax+By=C form? Stephen La Rocque lui répond.
	Find the point of inflexion for the curve y = e^x/(x^2-1)		2006-03-31
		Sam pose la question : Hi, i am trying to find the point of inflexion for the curve y = ex/(x2-1) and i got a really complex expression for y". I can't seem to solve x4-4x3+4x2+4x+3=0 so does that mean there is no point of inflexion? Penny Nom lui répond.
	The centroid of a triangle		2006-01-18
		Andrea pose la question : I am trying to find the centriod of a triangle. I have been given the three vertices of the triangle: A (-25, -20), B (-5, -40), and C (15, 30). I believe I calculated the correct midpoints: AB(E) (-5, 5), BC(D) (5, -5), and AC(F) (-15, -30). When I graphed these points I came up with the solution (-5, -10), but I can't seem to write the answer out (equations of the lines, etc) correctly. Any help would be greatly appreciated! Penny Nom lui répond.
	y - y1 = m(x - x1)		2006-01-08
		Greg pose la question : How do you change 2x + 3y = 7 into y - y1 = m(x-x1)? Penny Nom lui répond.
	A point is twice the distance from y = 5 + 2x as it is from y = 5 - 2x		2005-12-09
		Hazel pose la question : A point moves so that its distance from the line y=5+2x is twice its distance from the line y=5-2x. Find the general form of the equation of its locus. Penny Nom lui répond.
	What shape do I say a football is?		2005-11-14
		Peter pose la question : I am a 43 year old man. I am no longer in school, I have a bachelors degree. I like to tell stories about sports in ways to make people think about the amount of time they devote to the sports. For example, while attending a church in Chicago on the north side, I would pass by Wrigley field. I began to call it the church of the flying orb or sphere. Now if I want to tell a similar story about football (not soccer), what shape do I say a football is? Chris Fisher lui répond.
	Equidistant from the points (2,-1,1) and (0,1,3)		2005-11-06
		Roy pose la question : Find the point on the y-axis that is equidistant from the points (2,-1,1) and (0,1,3). Find the point not on the y-axis that is equidistant from the points (2,-1,1) and (0,1,3). Penny Nom and Walter Whiteley lui répond.
	The shortest distance from a point to a line		2005-03-30
		carly pose la question : Find the shortest distance from the point (-15, 2.5) to the line 5x+6y=30. Penny Nom lui répond.
	The tangent line at an inflection point		2004-11-28
		Louise pose la question : the equation of the tangent line to the curve y = x3 - 6x2 at its point of inflection is... Penny Nom lui répond.
	A fixed point problem		2004-11-14
		Bob pose la question : I am trying to solve an existence of fixed point problem. I need to show that a function f (on reals) with f'(x)=>2 has a fixed point. Claude Tardif lui répond.
	The point slope form of a line		2004-10-26
		Jack pose la question : Given a set of ordered pairs, ie (1,1) (2,4) (3,7), how does one determine the rule f(n) other than by trial and error Penny Nom lui répond.
	A rate of change problem		2004-10-15
		Frank pose la question : Find the rate of change of the distance between the origin and a moving point on the graph of y = x(squared) + 1 if dx/dt = 2 centimeters per second. Penny Nom lui répond.
	Intersecting a line and a curve		2004-01-29
		Senthil pose la question : between line and curve how can i find intersection point? could you write me the formula and explanation also sir. Penny Nom lui répond.
	A point and a line		2003-11-19
		Meenakshi pose la question : Given a line segment L(x1,y1) to (x2,y2) and a Point P(x3,y3). I need the formula to find a point on the line L that is closest to the point (x3,y3). Penny Nom lui répond.
	The sketch of a graph		2003-10-07
		A student pose la question : I was wondering how do you figure out if a graph has a horizontal tangent line. One of my homework problem was to sketch the graph of the following function; (4/3)x3-2x2+x. I set f''(x) ( the second derivative) of the function equal to zero and got the inflection point:(1/2,1/6). Also i am having trouble finding the concavity for x>1/2 and x<1/2, i am getting a different answer from the back of the book, the graph i draw looks completely different from the correct answer. Penny Nom lui répond.
	The mean house price		2003-09-10
		Carol pose la question : Question: I have to find the mean from the following example: Price Range £000 No of Houses 55 and under 60 3 60 and under 65 6 65 and under 70 13 70 and under 80 21 80 and under 100 15 100 and under 130 7 130 upwards 1 I know when calculating the mean you use the mid points of the classes, but how does this work for the 130 upwards class? Also, does this still work given the difference in the classes (ie. 1st class is 5, 5th class is 20, etc). Any help to get me started would be greatly appreciated. Penny Nom lui répond.
	Collinear Points		2003-01-13
		Gary pose la question : Which of the 4 points are collinear when you construct the following concurrent lines or rays of a triangle? P(1), the point where the angle bisectors intersect. P(2), the point where the altitudes (or extensions) intersect (inside or outside of the triangle). P(3), the point where the medians intersect. P(4), the point where the perpendicular bisectors (or extensions) of the three sides of a triangle intersect. This is for my 9-12 high school class in geometry. My name is Gary Thanks for your help. Gary Harley Weston and Chris Fisher lui répond.
	Compass points		2002-11-05
		Mhairi pose la question : I was asked this in maths but I am not sure if it is geography. Name all the compass points? We have been given 8 but he told us there is more and we have to name them. Chris Fisher lui répond.
	A set of points in space		2002-03-18
		Victoria pose la question : Describe the given set with a single equation or a pair of equations: The set of points in space that lie 2 units from the point(0,0,1) and at the same time 2 units from the point (0,0,-1). Penny Nom lui répond.
	Prove that the medians of triangle PQR meet in a central point G.		2001-11-11
		Jessica pose la question : Use a scalene triancle with one point (0,b) on the y axis, another point (2c, 0) on the x-axis and the last point, (2a,0) on the x-axis. Prove that the medians of triangle PQR meet in a central point G. Penny Nom lui répond.
	A 3 dimensional 5 pointed star		2001-11-08
		Kent pose la question : I am looking for a formula that will give me a layout for a 3 dimensional 5 pointed star. I want to form it out of sheet metal, using 5 polygons and soldering them at the apex. Can you please help me with this? I would like to be able to give the formula the height of the star from the bottom two points to the top point and also how deep the star is. Thank you very much! Judi McDonald lui répond.
	The shortest distance from a point to a line		2001-06-05
		Kat pose la question : Find the shortest distance from the given line. Round to the nearest tenth. (-2,-1) and x+5y+20=0 Penny Nom lui répond.
	A point that a group of lines pass through		2000-12-05
		Ross pose la question : A point that a group of lines pass through is called a________? Chris Fisher lui répond.
	Midpoints and endpoints		2000-02-15
		Jessica Sipes pose la question : I need to know how to find and endpoint using the midpoint and the other endpoint. Penny Nom lui répond.
	Parabolic mirrors		1999-11-07
		Andy White pose la question : I am working on a project concerning parabolic mirrors. I need to create a mirror to focus sunlight on a focal point, but I don't know how to do it. Is there some equation that tells where a focal point will be in relation to a parabola? What is a directrix? Penny Nom lui répond.
	Graph question		1998-05-12
		Rose Seminary pose la question : Why is the point of intersection of two lines the solution to the corresponding system of equations? Penny Nom lui répond.
	How many intersections?		1997-10-08
		James pose la question : (a) A collection of eight points, no three collinear. If lines are drawn between each pair of these points, how many points of intersection would there be? (b) what would your answer have been in part (a) if there had been n points to start with? Chris Fisher lui répond.

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