Question 1079796
rewrite in form of (x-h)^2+(y-k)^2=r^2
x^2+2x+y^2-6y=-1
complete the square of both
x^2+2x+1+y^2-6y+9=9, after adding 20 to both sides
(x+1)^2+(y-3)^2=3^2
The center is the additive inverse of both constants, so it is at (-1,3) and the radius is 3, the square root of 9.
The center is at (-1, 3)
{{{graph(300,300,-10,10,-10,10,3+sqrt(-(x+1)^2+9),3-sqrt(-(x+1)^2+9))}}}