Question

The graph shows the rate at which the depth of the water in a pond is changing over time.

On a coordinate plane, a graph titled Depth of Pond Water has Minutes on the x-axis and Feet on the y-axis. A line goes through points (2, 4) and (4, 8).

The depth of the water is increasing by
feet each minute.

Answer 1

The slope is (8 − 4)/(4 − 2) = 4/2 = 2, so the depth is increasing by 2 feet per minute.