Hi

I am working through some introductory calculus. so I have a question (see attachment Q 56.)

. I got 16x from y=8x^2 as the gradient function. What I want to know is, am I supposed to determine the x coordinates from these two functions using the gradient function?

I just graphed the two functions and found their intercepts for the coordinates thus found the gradients for the two points this way.

I'd like help with Q 58 also please.