Find the center-radius form of the circle described or graphed.
A. (x - 2)2 + (y + 1)2 = 9
B. (x + 2)2 + (y - 1)2 = 9
C. (x + 2)2 + (y - 1)2 = 3
D. (x - 2)2 + (y + 1)2 = 3
Answer: B
Mathematics
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A. 
B. 
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D. 
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A. y-axis
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