Question

Please help! I will give out a medal!

Answer 1

Label graphs A and B as f or f', based upon your understanding of the behavior of the derivative, f' as it relates to the slope of f.

Answer 2

see the peak of graph A
at peak, the derivative becomes 0
does graph B become 0 when we have peak at A ?
if yes,
A is f and B is f' :)

Answer 3

Does graph B become zero on the x axis?

Answer 4

Is that what you mean?

Answer 5

graph becomes zero means graph crosses x axis

Answer 6

Then yes! :)

Answer 7

Thank you so much!

Answer 8

yes,
welcome ^_^