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How do I use the distance formula to get this circle’s equation?

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determine the equation of the circle graphed below

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determine the equation of the circle graphed below

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kynnedi

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Geometry: Circle equations with distance formula
- determine the equation of the circle
-standard vs general equations for a circle
- distance formula:
- started by counting boxes from one point to another to find diameter
- radius: divide diameter by two
***Distance formula

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How would you use distance formula using your given coordinates?

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what i know now is that i have to square the x2-x1 +y2-y1. Thank you!

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How do I know when to use general form?
Difference between standard and general form?
- no multiplying

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Do you know how to transform a general form to a standard form?

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determine the center and radius in circle equation
- general form
- do I need to convert general to standard?
-x^2 +y^2-6x+2y-39=0

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what would be the best way to rearrange this?

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I know that you can pt the problem in a calculator to solve the equation.

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How did the video get 64?

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How do I know when to use the general form?

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Do I have to convert the general equation into the standard equation in order to determine the center and the radius?

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I now know how to solve for the center and radius of a circle by using completing the square