Find the radius and the center (x+3) 2 + (y+8) 2 = 81

This means the center is (-3,-8) and the radius is 9

Step-by-step explanation:

(x+3) ^2 + (y+8) ^2 = 81

The equation of a circle can be written as

(x-h) ^2 + (y-k) ^2 = r^2 where the center is (h, k) and the radius is r

We can rewrite the above equation as

(x - - 3) ^2 + (y - - 8) ^2 = 9^2

This means the center is (-3,-8) and the radius is 9