1. f(x)= 2^x^2

Find the point of the intersection of the tangent lines to f(x) at x=2 and -2. Can you explain why the function and these two tangent lines are symmetric?

2. What is the approx. slope of the tangent to the curve $\displaystyle x^3+y^3=xy$ at x=1

I got dy/dx for this problem...but i don't know how to get y when i plug in 1

Thank you