Standard General Circle

Convert the equation of the circle from general to standard form.

• A

• B

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• D

In order to convert from general form to center-radius form, you must ___________. 

• Multiply out

• expand

• factor

• complete the square

Convert the equation of the circle from standard to general.

• A

• B

• C

• D

Identify the center and the radius of the circle in general form.

• A

• B

• C

• D

How can we find the general form of a circle? 

• divide out the center-radius form

• multiply out the center-radius form

• factor out the center-radius form

• add up the center-radius form

Identify the center of the circle in general form.

• A

• B

• C

• D

Select the matching graph.

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Write the standard equation of the circle with the given center and radius; center (0,0) and radius: 3

• x²+y²=3

• x²+y²=6

• x²+y²=9

See Picture

• A

• B

• C

• D

Which graph corresponds to 
(x)²+ (y-6)²=9

• A

• B

• C

• D