Question

If f(x) = 7x+ 8, find f'(x).

Answer 1

x=-8/7 or -1.1428

Explanation:

The roots (zeros) are the x

values where the graph intersects the x-axis. To find the roots (zeros), replace f(x) with 0 and solve for x

Answer 2

f'(x) = 7

Explanation:

This is a basic derivative problem. The first derivative of f(x) would multiply the 7 by the power of x (which is one) and get rid of the 8. So, all you have left is 7 times 1 and your answer would be 7.