Exercises
1. the graph below shows the amount of time a person can shower with a certain amount of water.
minutes
20
60
80
40
gallons
a.
can you determine by looking at the graph whether the length of the shower is proportional to the number of
gallons of water? explain how you know.
b.
how long can a person shower with 15 gallons of water? how long can a person shower with 60 gallons of
water?
c.
what are the coordinates of point a? describe point a in the context of the problem.
d.
can you use the graph to identify the unit rate?