Question

Which is the best estimate for the average rate of change for the quadratic function graph on the interval -8

Answer 1

Answer:

Actually I just took the test on usatestprep and got it wrong

the answer is D) 2

Answer 2

X1= - 8, y1= -12
x2=-4, y2≈1

Average rate of change=(y2-y1)/(x2-x1)= (1+12)/(-4-(-8))=13/12≈1

Answer C) 1.