Graphing the Derivative Function Given the Graph of Any Function

Question

Picture 2 is the correct answer, but my question is in the given graph the first function slopes upwards why does it slope downward in the f'(x)

Answer 1

To the left of x = 3, the tangent lines have positive slope but get less steep as x increases.

At x = 3, the function is not differentiable

To the right of x = 3, the graph of f is linear and has positive slope. so the derivative is a positive constant.