Question

20. Determine the rate of change for the following equation on the given interval.

Answer 1

The equation is of a line so the rate of change is the same all along it. The rate of change is just the slope of the line = 2.

Answer 2

-2<x<3   | *2
-4<2x<6       | +7
3< 2x+7< 13


3<10<13

The answer is C