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, (6k−4(1)k+1,3k+3(1)k+1)=(2,a) ⇒6k−4k+1=2⇒k=32