1. Kaley and Parker climbed down a mountain. Kaley descended the mountain at a rate of 8 feet per hour. Th
graph shows the rate at which Parker descended the mountain. Compare the functions' rates of change.
Height (in feet)
100
90
80
70
60
50
40
30
20
10
0
1 2 3
Parker's Rate
4
5 6 7 8 9 10 *
Hours
a. Parker and Kaley descended the mountain at the same rate.
b. Kaley descended the mountain 4 times slower than Parker.
c. Kaley descended the mountain 4 feet per hour faster than Parker.
d. Parker descended the mountain 4 feet per hour faster than Kaley.