x2+y2−2x+6y+1=0\displaystyle {x}^{{2}}+{y}^{{2}}-{2}{x}+{6}{y}+{1}={0} is the equation of a circle with center (h,k)\displaystyle {\left({h},{k}\right)} and radius r\displaystyle {r} for:

h=\displaystyle {h}=  


and
k=\displaystyle {k}=  


and
r=\displaystyle {r}=  


Graph the circle.

Clear All Draw: Circle

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