Consider the points: (0,0) (2, 10), (7,35), (12, 60)
a) As x increases, does y increase or decrease?
b) Is this an example of direct variation or inverse
variation?
c) Circle the formula used for the type of variation you
have chosen.
y = ax
y =
X
d) Plug one of your points in to the equation and find
the constant of variation, "a".
e) Write the equation relating x and y by plugging your
constant of variation in to the equation in part c.
