Question

Find the equation of the circle with center (2, -6) and radius 4.
a.x2 + y2 = 4
b.x2 + y2 = 16
c.(x - 2)2 + (y + 6)2 = 16
d.(x + 2)2 + (y - 6)2 = 16

Answer 1

Center (h,k) radius r:
(x-h)^2 + (y-k)^2 = r^2

Answer 2

So what do i do?

Answer 3

Uh huh... substitute values in

Answer 4

So it would be C?

Answer 5

Yep :)