Question

What is the radius of the circle given by the

equation (x + 4)2 + (y − 3)2 = 4?
A. 16
B. 4
C. √4
D. 12

Answer 1

C sqrt (4) or 2

Explanation:

(x + 4)^2 + (y − 3)^2 = 4

We know that the equation for a circle can be written in the form

(x -h)^2 + (y − k)^2 = r^2 where (h,k) is the center and r is the radius

Rewriting the above equation

(x - -4)^2 + (y − 3)^2 = 2^2

The center is (-4,3) and the radius is 2