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Points A(-1, y) and B(5,7) lie on the circle with centre O(2, -3y).Find the value of y.

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Points A(-1, y) and B(5,7) lie on the circle with centre O(2, -3y).Find the value of y.

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The given points are A(-1,y), 8(5,7) and O(2,-3y).

Here, AO and BO are the radii of the circle. So

Hence, y = 7 or y = -1.

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