Let f (x) = x2-2x-4. What is the average rate of change for the quadratic function from x=-1 to x = 4?

Question

Shamar Kennedy

Mathematics

10 January, 03:22

Let f (x) = x2-2x-4. What is the average rate of change for the quadratic function from x=-1 to x = 4?

+1

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Leroy Marquez · Answer 1

The average rate of change x=-1 to x = 4 is

A = f (4) - f (-1) / 4 - (-1)

f (4) = 4²-2x4-4=16-12=4

f (-1) = 1+2-4 = - 1

f (4) - f (-1) / 4 - (-1) = 4 - (-1) / 4 - (-1) = 5/5=1

the rate of change is A=1