Q. For the function f(x)=−9x−9, find the slope of the tangent line at x=−6.Answer:
Identify Function Type: Identify the type of function and the method to find the slope of the tangent line.The function f(x)=−9x−9 is a linear function. The slope of the tangent line to a linear function is the same as the slope of the function itself.
Determine Slope: Determine the slope of the function.For a linear function in the form y=mx+b, the slope is the coefficient of x, which is m. In this case, the slope of the function f(x)=−9x−9 is −9.
Calculate Tangent Line Slope: Since the slope of the function is constant, the slope of the tangent line at any point x is the same as the slope of the function.Therefore, the slope of the tangent line at x=−6 is also −9.
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