9. The tables show the linear relationship between a swimmer's time in seconds and the number
of pool laps completed. Use the tables to answer a-c.
a. Find swimmer A's rate of change.
b. Find swimmer B's rate of change.
c. Which swimmer is swimming faster? Explain.
SWIMMER A
Time (s)
Laps
2
5
8
9
71
177.5
284
319.5
SWIMMER D
Laps
3
4
7
10
Time (s)
94.5
126
220.5
315
