Question

What is the value of f'(6) if the formula is f(x)=-8x-3

Answer 1

Answer: -8

Step-by-step explanation:

Applying the derivative to f gets us

f(x) = -8x - 3

f ' (x) = -8

The fact that f(x) being linear directly means that the derivative is simply the slope value. No matter what we replace x with, the result is always -8.

Answer 2

f'(6) = -8

Step-by-step explanation:

f(x)=-8x-3

First find the derivative of the function

f'(x) = -8

This is a constant so when x=6 it will be -8

f'(6) = -8