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

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation: