Question 883832: Please help! Change each equation to standard form, write the center &radius of the circle. X^2+y^2-6y-16=0
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Change each equation to standard form, write the center &radius of the circle. X^2+y^2-6y-16=0
Rearrange:
x^2 + (y^2-6y+?) = 16+9
Complete the square::
x^2 + (y^2 - 6y + 9) = 16+9
Factor to show standard form:::
(x-0)^2 + (y-3)^2 = 25
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Center: (0,3)
Radius:: sqrt(25) = 5
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Cheers,
Stan H.
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