Question #13856

1 Answer
May 23, 2016

The standard form for the equation of a circle is (x-h) #(x-h)^2+(y-k)^2=r^2#, with the center of the circle being at #(h,k)#. Thus the center of the circle is #-1*36=-36# and #-1*(-4)=4#, and the radius is #sqrt(9)=3#