MFM1P
Date: ___________________
Direct and Partial Variation and Writing Equations
__________________ variation is when the graph is a straight
line that passes through the origin (0, 0).
Draw an example of this type of variation. Do not
forget to label and title your graph!
What does this say about your graph?
_____________________________________________________________________________________
_____________________ variation is where all points lie on a
straight line and the graph doesn’t pass through the origin (0, 0).
Draw an example of this type of variation. Do not
forget to label and title your graph!
What does this say about your graph?
_____________________________________________________________________________________
MFM1P
Date: ___________________
Writing an Equation from a Word Problem
Bell Canada charges $20 per month, plus $0.10 per minute for long distance calling.
Write an equation to determine the total monthly charges, C dollars, for n minutes of long distance
calling.
C = total cost
n = # of long distance minutes
______ = __________________
Writing an Equation from a Table of Values and Graphs
A rental car costs $20 per day plus $0.10 for each kilometer it is driven. Complete the table below.
Number of
Kilometres
Cost ($)
0
100
200
300
400
Write an equation to model this relationship. C represents the cost and n represents the number of
kilometres.
_______ = ___________________________