







A linear relationship 
20161016 

Bianca pose la question : x represents the number of hours since 8am. y represents the number of children the school nurse has seen during the school day. The nurse has seen 3 children by 8am and 27 children by noon.
How many children has the nurse seen at 2pm?
If the nurse has seen 18 children, what time is it? Penny Nom lui répond. 





Archimedes, Euclid and "Circular Reasoning" 
20151115 

Ron pose la question : I have read about Archimedes and his work with sphere in cylinder and cone in cylinder and the volume relationships. Did he or any others also extend this to regular based polygon based regular like pillars, and columns? The ratio of 1/3 to 1 whole holds true with all regular based columns as example: a regular pyramid having a regular hexagon base inside a regular hexagon column of equal height. Chris Fisher lui répond. 





Percent as a fractional relationship 
20130114 

Kenneth pose la question : What does the following indicate?
"A percent is another way of expressing the ratio or fractional relationship
of two numbers."
I know what a ratio is, but the term "fractional relationship" confuses me.
I thank you for your reply. Penny Nom lui répond. 





A linear relationship 
20100622 

Laura pose la question : The monthly cost of driving a car depends on the number of miles driven. Lynn found that in May it cost her $300 to drive 480 miles and in June it cost her $460 to drive 800 miles.
Question: Express the monthly cost C as a function of the distance driven d, assuming that a linear relationship gives a suitable model. Robert Dawson lui répond. 





A linear relationship 
20100224 

Mel pose la question : This table shows the linear relationship between an aeroplane's height (above sea level) and the outside air temperature.
h (cm) 
120 
340 
480 
600 
1040 
T (degrees C) 
14.28 
12.96 
12.12 
11.4 
8.76 
Find the gradient and vertical intercept of the function. Write the formula for T. Penny Nom lui répond. 





Find an expression for the nth term 
20090220 

Dawn pose la question : Find an expression for the nth term:
x= 1 2 3 4...n
y=11 8 5 2...?
I think it's a linear relation but don't know the equation that goes with it. Stephen La Rocque lui répond. 





Growth factor and growth rate 
20080213 

william pose la question : what is the difference between growth factor and growth rate? Stephen La Rocque and Harley Weston lui répond. 





A relationship between numbers 
20080124 

Robyn pose la question : Study these problems: ? 2=4 ? 5=25 ? 9=81
1. Explain what ? means (hint there are two answers).
2. What number is equal to ? 6
3. What number does ? 12 represent? Stephen La Rocque and Penny Nom lui répond. 





What is the relationship between 0/6, 2/4, 4/2, 6/0? 
20080117 

Olugbenga pose la question : What is the relationship between 0/6, 2/4, 4/2, 6/0? Penny Nom lui répond. 





Relations and functions 
20070816 

virginia pose la question : determine whether each relation is a function provide reasons for identifying relation
(3, 4) (5, 9) (9, 9) (2, 3)
(0, 0) (0, 1) (1, 4) (2, 4)
(2, 1) (4, 5) (8, 4) (1, 0)
(8, 3) (8, 0) (7, 7) (4, 7) Steve La Rocque lui répond. 





Making and using equations 
20060830 

Brooke pose la question :
write an equation to model the relationship between these variables. Define the variables you use, and refer to your notes for a variety of formats of equations we have studied this year.
week 1: 3 birds infected
week 2: 15 birds infected
week 3: 75 birds infected
week 4: 375 birds infected
Stephen La Rocque lui répond. 





Two problems 
20021014 

Eva pose la question :
a) How many different equivalence relations can be defined on the set X={a,b,c,d}? b)Show that 6 divides the product of any 3 consecutive integers. I know it is true that 6 divides the product of any 3 consecutive integers. However, i have problem showing the proof. Leeanne Boehm and Penny Nom lui répond. 





Equivalence relations on a set of cardinality n 
20020706 

Siddhartha pose la question : what is the no. of equivalence and transitive relations on a set of cardinality n? Penny Nom lui répond. 





Functions and relations 
20020425 

Erin pose la question : Here's a few math problems that might drive a person insane ;)  If 2f(x)  3f(1/x) = x^2 what is f(2)?
 What are the domain and range of the following relations?
 x^2  4y^2 = 25
 4x^2 + 9y^2 = 36
 The port of Swan Harbor is 200km away from Merry Town Inlet on a bearing of N50E from Merry Town. A ship leaves Merry Town at 8am and sails N15W at 15 km/h. At the same time, a second ship leaves Swan Harbour on a course of S80W at 20km/hour. How close, to the nearest km, are the two ships at 13:00?
 Prove the identity. 1+sinx + cosx/ 1sinx + cosx = 1+sinx / cosx
Penny Nom lui répond. 





An order relation 
20010212 

Amy pose la question : What is an order relation? Claude Tardif lui répond. 





Equivalence Relations 
19990506 

Megan pose la question : I am tutoring a boy who got this assignment from his teacher and I have no clue how to do it because I don't even know what the questions is asking! I need some help. Hereit is: "Give five examples of relations which are not equivalent relations and five examples of equivalent relations and explain why they are equivalent relations." This is seventh grade and I read about it in his book but it is not coming together for me. Chris Fisher lui répond. 

