Question

The table below shows the linear relationship between the distance in feet below sea level and the time in seconds traveled by a submarine.

time (seconds) | Distance below sea level (ft)
0 | 380
15 | 545
27 | 677
44 | 864
72 | 1172

What is the rate of change (slope) of the distance in feet below sea level with respect to time that the submarine traveled?

(1 point)

Answer 1

Use any two points. With (0, 380) and (72, 1172):

slope = (1172 − 380) / (72 − 0) = 792 / 72 = 11.

The submarine's depth changed at 11 feet per second (increasing below sea level).