A circle with center on (0,-2) and radius of 9

(x) ^2 + (y+2) ^2 = 81

Step-by-step explanation:

The equation of a circle can be written in the form

(x-h) ^2 + (y-k) ^2 = r^2

where (h, k) is the center and r is the radius

(x-0) ^2 + (y - - 2) ^2 = 9^2

(x) ^2 + (y+2) ^2 = 81