Posted by kieara on Friday, June 10, 2011 at 10:44am.
Question: 2 of 40: Which of the following circle equations represents a circle whose center is at (0, 0)?Select one of the options below as your answer: A. x2 + y2 = 45 B. (x − 3)2 + (y − 5)2 = 0 C. (x + 3)2 + (y − 3)2 = 0 D. x2 + (y − 1)2 = 1

geometry  Bayarbold, Friday, June 10, 2011 at 11:50am
No it isn't.For example:
when (x2)^2+(y3)^2=16 equation,whose center is (2,3) and radius is 4.
there is an only a is true.Because whose center coordinate is (0,0).

geometry  Anonymous, Tuesday, March 25, 2014 at 9:15am
The equation x2 + y2 − 2x + 2y − 1 = 0 is the general form of the equation of a circle. What is the standard form of the equation?
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