Question

Write the equation for the circle graphed below. Center = (-5, -5) Radius= 4

Answer 1

(x + 5)^2 + (y + 5)^2 = 16.

Explanation:

(x - a)^2 + (y - b)^2 = r^2 where (a, b) is the centre and r =- the radius.

Here (a, b) = (-5, -5) and r = 4, so:

(x - (-5))^2 + (y - (-5))^2 = 4^2

(x + 5)^2 + (y + 5)^2 = 16