Question: Given the points P(1, 3, 4), Q(2, 2, 1) and R(3, 7, 2), find the vectors PQ(vector) and QR(vector). Show that P, Q and R

Given the points P(1, –3, 4), Q(2, 2, 1) and R(3, 7, –2), find the vectors PQ(vector) and QR(vector). Show that P, Q and R lie on a straight line and find the ratio PQ: QR.

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