Question

Here is the equation of a circle in standard form.

(x − 4)2 + (y + 8)2 = 64

What are the coordinates of the center of the circle?

A. (8, -4)
B. (4 , -8)
C. (-8, 4)

Answer 1

(4,-8)

Explanation:

Equation of a circle:

(x - h)² + (y - k)² = r²

Given:

(x - 4)² + (y + 8)² = 64

-h = -4

h = 4

-k = +8

k = -8

(h,k) = (4,-8)

Answer 2

B. (4, -8)

Explanation: