Colin loves to play the piano but doesn't like practicing the exercises his piano teacher assigns. Colin knows the exercises will help him play better though, so he tries to motivate himself using his favorite
treat-chocolate chip cookies.
There is a proportional relationship between the amount of time (in hours) that Colin practices the
piano, x, and how many cookies he gives himself, y.
x (hours) y (cookies)
5
10
A WNH
15
20