If H(x) = , and r(3) = 9,
and r'(3) = -1,
What is H'(3)?

I used the chain rule but for some reason I'm still getting the wrong answer.

You should find the answer from the answers you wrote

Step-by-step explanation:

u should find the x from the answers you wrote like the r'(3) = -1

then from this answer u should think about the h'(3)' answer

answer: b.

step-by-step explanation:

the y coordinate for point b is 0, and answer b is the only one with that y coordinate.