Question

Find the slope of the tangent line to the graph of f at the given point. f(x) = 5x² + x at (-4, 76).

Answer 1

Answer: -39 is the slope

Explanation:

f (x) = 5x*x + x, f'(x) = 2*5*x + 1

f '(x) = 10x + 1

f '(-4) = 10*(-4) + 1 = -40 + 1 = -39