Chapter 9 Review Pages 360-361
8.a) The graph shows the amount of money earned based on how many cars they washed.
b) over one, up ten.
13.a) t = time (h) d = distance (d)
b) 15 represents the speed of 15km/h that he traveled.
e) yes, because the cyclist can travel for hours that aren't whole numbers.
Chapter 9 Practice Test Page 362-363
c) Yes, because the graph shows a straight line.