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If the middle point of the line segment joining `(3, 4) and (k, 7)` is `(x, y) and 2x+2y+1=0`, find the value of `k`.

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RD SHARMA ENGLISH-COORDINATE GEOMETRY-All Questions
  1. In what ratio is the line segment joining the points A(-2, -3) and B(...

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  2. In what ratio is the line segment joining (-3,\ -1) and (-8,\ -9) d...

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  3. If the middle point of the line segment joining (3, 4) and (k, 7) is (...

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  4. In what ratio does the line x -y - 2 = 0 divides the line segment join...

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  5. Find the ratio in which the line segment joining (-2, -3) and (5, 6)...

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  6. Prove that the points (4,\ 5),\ (7,\ 6),\ (6,\ 3),\ (3,\ 2) are the...

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  7. Prove that (4,\ 3),\ (6,\ 4),\ (5,\ 6) and (3,\ 5) are the angular ...

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  8. Show that the points (-4,\ -1),\ \ (-2,\ -4),\ \ (4,\ 0) and (2,\ 3)...

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  9. Find the lengths of the medians of a triangle whose vertices are A(...

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  10. Three vertices of a parallelogram are (a+b ,\ a-b),\ \ (2a+b ,\ 2a-...

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  11. If two vertices of a parallelogram are (3,\ 2),\ (-1,\ 0) and the ...

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  12. If the points (-2,\ -1),\ (1,\ 0),\ (x ,\ 3) and (1,\ y) form a ...

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  13. The points A(2,\ 0),\ \ B(9,\ 1),\ \ C(11 ,\ 6) and D(4,\ 4) are the ...

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  14. If three consecutive vertices of a parallelogram are (1,\ -2),\ (3,...

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  15. If the points A(a ,\ -11),\ \ B(5,\ b),\ \ C(2,\ 15) and D(1,\ 1) a...

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  16. If the coordinates of the mid-points of the sides of a triangle be ...

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  17. Find the lengths of the medians of a A B C having vertices at A...

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  18. Find the lengths of the medians of a A B C having vertices at A(5...

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  19. Find the coordinates of the points which divide the line segment jo...

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  20. Show that the mid-point of the line segment joining the points (5,\7...

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