Let f (x) = x^2-2x-4. What is the average rate of change for the quadratic function from x=-1 to x = 4? Enter your answer in the box. Show your work

Question

Jacqueline Tyler

Mathematics

1 July, 15:48

Let f (x) = x^2-2x-4. What is the average rate of change for the quadratic function from x=-1 to x = 4? Enter your answer in the box. Show your work

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Answers (1)

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Greyson Ochoa · Answer 1

Remember

rate of change/slope between (x1, y1) and (x2, y2) is

(y2-y1) / (x2-x1)

so the average from x=-1 to x=4 is

(f (4) - f (-1)) / (4 - (-1))

f (-1) = - 1

f (4) = 4

average is (4 - (-1)) / (4 - (-1)) = 1

average rate of change is 1