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Question

If the point (2,a) divides the line segment joining the points (−4,3) and (6,3), then

A
the ratio is 2:3
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B
the ratio is 3:2
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C
the value of a is 3
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D
the value of a is 2
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Solution

The correct options are
B the ratio is 3:2
C the value of a is 3
Let the given point C(2,a) divides the line segment joining the points A(4,3) and B(6,3) in the ratio k:1.
Then, (6k4(1)k+1,3k+3(1)k+1)=(2,a)
6k4k+1=2k=32

3k+3k+1=a3×32+332+1=aa=3

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