HELP PLEASE FOR MATH TEST REVIEW

Average rate of change; 1

Step-by-step explanation:

1. Find the end-points of the given interval

Input (-9) and (0) into the equation.

Input (-9)

81 - 90 + 20

11

point is; (-9, 11)

Input (0)

0 + 0 + 20

20

point is; (0, 20)

2. Find the slope

Now find the slope between the two points, the equation for the slope is;

Substitute in the points;

-

= -1

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