find the equation of a circle that satisfies the given conditions. Radius 9 and center (-1, -8)

Question

find the equation of a circle that satisfies the given conditions. Radius 9 and center (-1, -8)

Answer 1

the equation is (x-h)²+(y-k)²=r² where (h,k) is the center and r is the radius

radius is 9 and center is (-1,-8)

(x-[-1])²+(y-[-8])²=9²

(x+1)²+(y+8)²=81