You can put this solution on YOUR website! Write an equation of a circle with a diameter of 16" and a center at the point (-2, 1)
-----------------
The radius is 8.
Form: (x-h)^2 + (y-k)^2 = r^2
---------------------------------
(x+2)^2 + (y-1)^2 = 8^2
==========================================
Cheers,
Stan H.