Question

Write the equation of the circle for the given center and radius.
(-3,6) and radius of 6.

Answer 1

(x+3)^2+(y-6)^2=36

Answer 2

That's it? Then what's (x-h)^2+(y-k)^2=r^2 for?

Answer 3

OH DUH nevermind

Answer 4

Determine the coordinates of the center and the measure of the radius for the given equation.
(x-4)^2+(y+1)^2=121
I got the center to be (4,-1) and the radius to be 11, is that right?