Question

(a) ahmad stands on a high dive platform for several seconds. then he dives into the pool and swims around. he then climbs back up toward the high dive platform.
(b) throughout last month, the henderson family pool was full of water. three weeks ago, the pool began to leak, and it lost water at a constant rate. the following week, there was a big rain, and the pool almost overflowed.

Explanation:

Step1: Analyze Ahmad's situation

He stands still (constant height - horizontal line), then dives (decrease in height), swims (constant low - height horizontal line), and climbs back up (increase in height). The first graph in part (a) shows a horizontal line (standing), a decrease (diving), a horizontal line (swimming), and an increase (climbing back up).

Step2: Analyze the pool water situation

The pool was full, then leaked at a constant rate (decrease in water amount - straight - line down), and then there was a big rain (increase in water amount - straight - line up). The first graph in part (b) shows a horizontal line (full), a decrease (leaking), and an increase (rain).

Answer:

(a) First graph
(b) First graph