# Answer the Problems Given a Situation: Tangent Lines with Zero Slope

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Question description

Tangent lines with zero slope:

a. Graph the function f(x)=4-x^2.
b. Identify the point (a, f(a))at which the function has a tangent line with zero slope.
c.Consider the point (a, f(a)) found in part (b). Is it true that the secant line between (a-h, f(a-h)) and (a+h, f(a+h)) has slope zero for any value of h≠ 0?

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