Equation of the circle is
.
Standard form of the circle is
.
Here center
.
Compare the circle equation with the standard form.
\Center
and
.
Consider 
Solve for
.

Construct a table for different values of
.
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Graph :
\Plot the center
.
Plot the points obtained in the above table.
\Connect those points with a smooth curve.
\Graph the circle
.

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