Question

Find the center and radius of the circle. (x + 3)2 + (y + 4)2 =9

Answer 1

The general equation for any circle with its center at point (a, b) is

                 (x - a)² + (y - b)²  =  (radius)²

So the circle in the question is centered at (-3, -4), and its radius is  3 .