$\"\"$

The center of the circle is $\"\"$ .

The radius is $\"\"$ .

The standard form circle equation is $\"\"$ , where $\"\"$ is center and $\"\"$ is radius.

Substitute $\"\"$ and $\"\"$ in $\"\"$ .

$\"\"$

The equation of circle is $\"\"$ .

$\"\"$

Graph:

Draw a coordinate plane.

All points are the same distance from the center.

Plot the center at $\"\"$ and draw the circle away $\"\"$ units.

Graph the circle equation $\"\"$ .

$\"\"$ .

$\"\"$

The equation of circle is $\"\"$ .

Graph:

Graph the circle equation $\"\"$ .

$\"\"$ .