Question

What equation represents a circle with a center at (2, -8) and a radius of 11

Answer 1

(x - 2)² + (y + 8)² = 121

Explanation:

(x - h)² + (y - k)² = r²

(x - 2)² + (y - -8)² = 11²

(x - 2)² + (y + 8)² = 121

Answer 2

(x-2)^2 + (y+8)^2 = 121

Explanation:

We can write the equation of a circle as

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

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

(x-2)^2 + (y- -8)^2 = 11^2

(x-2)^2 + (y+8)^2 = 11^2

(x-2)^2 + (y+8)^2 = 121