$\"\"$

\

The circle equation is $\"\"$ .

\

$\"\"$ (Take out common factor)

\

$\"\"$ (Divide each side by 3)

\

$\"\"$ (Simplify)

\

$\"\"$ (Simplify)

\

$\"\"$ (Simplify) $\"\"$

\

Graph the circle with center $\"\"$ and radius $\"\"$ .

\

$\"graph$ $\"\"$

\

$\"\"$ graph is

\

$\"graph$