SOLUTION: Which is the standard form of the equation where the point (-2,4) is on a circle whose center is the origin?

Question 475249: Which is the standard form of the equation where the point (-2,4) is on a circle whose center is the origin?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Which is the standard form of the equation where the point (-2,4) is on a circle whose center is the origin?
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radius equals the distance from (-2,4) to the origin.
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r^2 2^2 + 4^2 = 20
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r^2 = 20
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Equation:
(x+2)^2 + (y-4)^2 = 20
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Cheers,
Stan H.
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