Please Help me Its a math problem see image attached

Answer:
Step-by-step explanation:
Average rate of change within an interval is the slope of the endpoints.
The endpoints are:
The slope is
Correct choice is C
Answer: -3
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To find the Average rate of change within an interval use the slope of the endpoints.
(- 1, 6) and (0, 3)
The slope is
[tex]\frac{3-6}{0-(-1)}=\frac{-3}{1}=-3[/tex]
Hope this helps!