1.

If the line x + 2by + 7 = 0 is a diameter of the circle x2 + y2 – 6x +2y = 0, then b = __________.

Answer» If the line x + 2by + 7 = 0 is a diameter of the circle x2 + y2 – 6x +2y = 0, then b = __________.


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