Question

What is the equation of a circle with center (-4, 7) and radius 6?

Answer 1

(x +4)^2 + (y-7)^2 = 36

Explanation:

The equation of a circle is of the form

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

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

(x- -4)^2 + (y-7)^2 = 6^2

(x +4)^2 + (y-7)^2 = 36