Question

If p(4,-2) is midpoint of line segment joining the points A(5k,3) and b(-k,-7) find value of k

Answer 1

If p is midpoint then
$4 = \frac{5k - k}{2} ...(1) \\ - 2 = \frac{3 - 7}{2} \\ from \: (1) \\ 4k = 8 \\ k = 2$
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