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| Math Central | Quandaries & Queries |
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Subject: Circle equation Thanks in advance for the help, I'll just tell the question as it is in front of me. x^2+y^2=121 is the equation of the Circle C (1) Write down the center and the radius of C. Help! |
Hello.
Can you rewrite this equation in the form:
(x - a)2 + (y - b)2 = c2
where a, b, and c are constants (fixed numbers)? If so, then the center is at (a,b) and the radius is c.
I hope this helps,
Stephen La Rocque.
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