The standard form of a circle equation is , where is center and is radius of the circle.

Center and radius .

Substitute and in standard form.

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The general form of a circle equation is .

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Graph the circle with center and radius.

Find four points " radius away from the center in the up, down, left and right direction".

Up , down , left and right .

Draw the coordinate plane.

1). Plot the center at .

2). Plot four points " radius away from the center in the up, down, left and right direction".

3). Sketch the circle.

The standard form of the circle equation is .

General form of the circle equation is .

Graph of the circle:

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