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Question

If Pa2, 4 is the midpoint of the line segment joining the points A(−6, 5) and B(−2, 3) then the value of a is [CBSE 2011]
(a) −8 (b) 3 (c) −4 (d) 4

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Solution

The point Pa2, 4 is the midpoint of the line segment joining the points A(−6, 5) and B(−2, 3). So
a2=-6-22a2=-4a=-8
Hence, the correct answer is option (a).

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