These tables represent a quadratic function with a vertex at (0, -1). What is
the average rate of change for the interval from x = 8 to x = 9?
y
Interval
Average rate
of change
-1
-3
-5
O to 1
1 to 2
2 to 3
3 to 4
4 to 5
5 to 6
O A. -17
B. -65
O c. -82
D. -2