Question

Write an equation of the circle with center (-4.8) and radius 9

Answer 1

(x+4)^2 +(y-8)^2 = 81

Explanation:

The equation of a circle can be written as

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

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

(x- -4)^2 + (y-8)^2 = 9^2

(x+4)^2 + (y-8)^2 = 9^2

(x+4)^2 +(y-8)^2 = 81