Question

A circle has its center at (-2, -3) and a radius of 3 units. What is the equation of the circle?

what formula would i have to use to solve this. or better yet how would i solve this. Thanks.

Answer 1

\[ f(x,y)=(x-u)^2+(y-v)^2 = r^2 \] where (u/v) are the xy-respective coordinates of the center and r is the radius.

Answer 2

you might also find this site useful: http://www.mathsisfun.com/algebra/circle-equations.html

Answer 3

Thanks.

Answer 4

yw :)