The graph of a function f is shown. (a) Find the average rate of change of f

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The graph of a function f is shown.

(a) Find the average rate of change of f on the interval [20, 60].

(b) Identify an interval on which the average rate of change of f is 0.

(c) Which interval gives a larger average rate of change, [40, 60] or [40, 70]?

(d) Compute 

f(40) – f(10) 40 – 10


what does this value represent geometrically?

y 800 400 0 20 40 60 х

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