SOLUTION: Given the function f(x) = - 4x find the AVERAGE RATE of CHANGE of f from -4 to 1

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Question 153478: Given the function f(x) = - 4x find the AVERAGE RATE of CHANGE of f from -4 to 1
Answer by stanbon(75887) About Me  (Show Source):
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Given the function f(x) = - 4x find the AVERAGE RATE of CHANGE of f from -4 to 1
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Average = [f(1)-f(-4)]/[1--4]
Average = [-4 - 16] / [1+4] = -20/5 = -4
Notice that the answer is the slope of y = -4x
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Cheers,
Stan H.