Q9 of 25 Page 10

Using vectors show that the points (3, 2, 1), (5, 5, 2) and (-1, -4, -1) are colinear.

Three points are (3, 2, 1), (5, 5, 2) and (-1, -4, -1)

To Prove: Given points are collinear.


Explanation: We have three points A(3, 2, 1), B(5, 5, 2) and B(-1, -4, -1)


we can write in the vector as





Three points are collinear if





And,





Also,







Hence, Points are collinear


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