A unit circle center at the origin undergoes a series of transformations. The equation of the resulting graph is (x-3)^2+ (y+4)^2= 25

So I have to get y by itslef right?

so:

(y+4)^2= 25-(x-3)^2

(y+4)= squar root(25-(x-3)^2)

y= square root(25-(x-3)^2) -4

I don't get what to do from here???