Calculus Can Be Used to Find the Slope of the Line

question 114

Multiple Choice

Calculus can be used to find the slope of the line tangent to a curve. The slope of the tangent to the curve $y = f ( x ) \text { at } x = a$ is f'(a) . Use f'(x) to find the slope of the tangent to $y = f ( x )$ at the given value of x.
-The derivative of a function can be used to find the slope of the line tangent to its graph. If the slope of the line tangent to the graph of $f ( x ) = - x ^ { 3 } + 7$ at $( 3 , - 20 )$ is $- 27$ , write the equation of this tangent line.

• A) \(y = - 27 x + 47\)
• B) \(\mathrm { y } = - 27 \mathrm { x } - 61\)
• C) \(\mathrm { y } = - 27 \mathrm { x } - 47\)
• D) \(y = - 27 x + 61\)

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