Question

PLEASE HELP! MEDAL! @freckles @ganeshie8 @Hero @mathmale

Answer 1

@caozeyuan

Answer 2

For starters, the derivative is equal to the slope of the original function at a given point.

Answer 3

What that necessarily means is, the graph given shows the slope of the original function.

Answer 4

Use the domain given as your intervals. Tell whether the graph is increasing or decreasing in that interval.