In the following x,y and (a) are all variables. Show steps please! Thank you!

Question

1) y^2 = x^2+a^2

2) y^2+ay = x^2+ax+a^2

Answer 1

If both are true, then ay = ax
and
therefore y = x

Answer 2

Use implicit diff. to find dy/dx of each of the following.

This is the question

Answer 3

#1: 2y y' = 2x + 0
#2: 2y y' + ay' = 2x + a + 0

just solve for y' in each case.