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If the points (k ,\ 2k),\ (3k ,\ 3k) a...

If the points `(k ,\ 2k),\ (3k ,\ 3k)` and `(3,\ 1)` are collinear, then `k`
(a) `1/3` (b) `-1/3` (c) `2/3` (d) `-2/3`

A

`-1/2`

B

`1/2`

C

`(-1) /7`

D

`1/7`

Text Solution

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The correct Answer is:
B
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TARGET PUBLICATION-CO-ORDINATE GEOMETRY-MULTIPLE CHOICE QUESTIONS
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  2. The ratio in which X -axis divides the segment joining (-4,3) and (2,...

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  3. The line segment joining the points (-1,-2) and (2,8) is divided by ...

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  4. The co-ordinates of the midpoint of segment joining A (3,4) and B (5,...

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  5. If the line joining A (3,3) and a point B has midpoint at origin, the...

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  6. If (5,6) is the midpoint of the line segment joining (6,5) and (4,k), ...

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  7. In the figure , point P is the centre of the circle and AB is the dia...

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  8. If P (5,-3) and Q(3,y) are the points of trisection of the line segmen...

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  9. The point which lies on the perpendicular bisector of the line segmen...

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  10. If A(4,\ 9),\ \ B(2,\ 3) and C(6,\ 5) are the vertices of A B C, ...

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  11. In triangle PQR , G (6,-2) is the centroid . If P (3,-5) and Q(11,-4),...

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  12. In A (h,-5) , B (-1,-6) and C (4,k) are the co-ordinates of vertices ...

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  13. The slope of the line parallel to Y-axis

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  14. Write the slope of the line which makes an angle of 60^(@) with posi...

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  15. If the slope of a line is sqrt(3) , the angle made by the line with th...

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  16. In the figure , line l is parallel to X -axis . Which of the following...

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  17. The slope of the line passing through the points (5,-2) and (-3,-6) is...

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  18. If the slope of the line joining the points (k,-3) and (-6,-8) is 5/4,...

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  19. The line joining the points (1,-5) and (4,-3) is parallel to the line ...

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  20. If the points (k ,\ 2k),\ (3k ,\ 3k) and (3,\ 1) are collinear, th...

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