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Question 94540This question is from textbook COLLEGE ALGEBRA
: x2 + y2 = 4 The question is find the center and the radius of the circle. I need to know how to solve this.
This question is from textbook COLLEGE ALGEBRA
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! x2 + y2 = 4 The question is find the center and the radius of the circle. I need to know how to solve this.
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The form you want is (x-h)^2 + (y-k)^2 = r^2
which has center at (h,k) and has a radius of r
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Rearranging your equation you get:
(x-0)^2 + (y-0)^2 = 2^2
This has center at (0,0) and radius = 2
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Cheers,
Stan H.
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