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Prove that the points P(3,2,-4),Q(5,4,-6...

Prove that the points P(3,2,-4),Q(5,4,-6) and R(9,8:-10) are collinear. Find the ratio in which the point Q divides the line segment PR.

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Give that P = `(3, 2, -4) Q = (5, 4, -6), R = (9, 8, -10)` D. rs. Of PQ are `lt2,2,-2gt` D. rs. Of QR are `lt4,4,-4gti.e.,lt2,2,-2gt` Thus D.rs. Of PQ and QR are same. So P,Q,R lie on the same straight line. Hence P , Q, R are collinear.(Proved)
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MBD PUBLICATION-THREE DIMENSIONAL GEOMETRY-QUESTION BANK
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