Question

The table shows the linear relationship between the elevation in feet of an airplane as it descends and the number of minutes.What is the rate of change of the elevation of the airplane with respect to the number of minutes since the plane started its descent?(1 point)900 ft/min1,200 ft/min1,500 ft/min1,800 ft/min
2min=29000ft
4min=26000ft
7min=21500ft
12min=14000ft

Answer 1

The rate of change is (14000 − 29000) / (12 − 2) = −1500 ft/min, so the plane descends at 1,500 ft per minute.