Q. For the function f(x)=−6x−9, find the slope of the tangent line at x=1.Answer:
Identify Function Type: Identify the type of function and the method to find the slope of the tangent line.The function f(x)=−6x−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 the function f(x)=−6x−9, the coefficient of x is −6.
Conclude Tangent Slope: Conclude the slope of the tangent line at x=1. Since the slope of the function is constant, the slope of the tangent line at any point, including x=1, is −6.
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