1.

Find the equation of the circle which passes through (-1, 1) and (2, 1), and having centre on the line x + 2y + 3 = 0.

A. 2x2 + 2y2 - 2x + 7y - 13 = 0
B. x2 + y2 - 2x + 7y - 13 = 0
C. 2x2 + 2y2 + 2x + 7y - 13 = 0
D. x2 + y2 + 2x + 7y - 13 = 0
Answer» B. x2 + y2 - 2x + 7y - 13 = 0


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