Question

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

Answer 1

(x+4)[superscript]2 + (y-7)[superscript]2 = 36

Answer 2

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

Explanation:

We can write the equation of a circle as

( 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