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Points A(-1, y) and B(5, 7) lie on a ci...

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

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The correct Answer is:
y=-1 or 7 radius =5 , `sqrt(793)`
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VK GLOBAL PUBLICATION-COORDINATE GEOMETRY -PROFICIENCY EXERCISE ( Short Answer Questions-I )
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  10. If the points (a, b), (a', b') and (a-a', b-b') are collinear, show th...

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  11. Show that the points (a^(2) , 0), (0, b^(2) ) and (1, 1) are collinear...

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  12. The coordinates of A ,\ B ,\ C are (6,\ 3),\ (-3,\ 5) and (4,\ -2) ...

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  14. If the point A (-2, 1 ), B (a, b) and C (4, -1) are collinear and a-b ...

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  16. If the points A(-1,\ -4),\ \ B(b ,\ c) and C(5,\ -1) are colline...

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  17. If the point P(2, 2) is equidistant from the points A(-2, k) and B(-2k...

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  18. Points A(-1, y) and B(5, 7) lie on a circle with centre O(2, -3y) . F...

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  19. the value of k for which the points (3k - 1, k-2), (k, k-7) and (k-1, ...

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  20. Points P, Q, R and S divide the line segment joining the points A(1, 2...

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