A circle is centered at (−4, 9) and has a radius of 11.
What is the equation of the circle?
Enter the equation in the box using lower case variables x and y.
Using (x - h)^2 + (y - k)^2 = radius^2 where h, k is the center, we have
( x - -4)^2 + (y - 9)^2 = 11^2
(x + 4) ^2 + ( y - 9 )^2 = 121
+128 
