4. Using section formula, show that the points A (2, –3, 4), B (–1, 2, 1) and are collinear.
three points, A (2, –3, 4), B (–1, 2, 1) and C (0, 1/3, 2)
Let a point P divides Line segment AB in the ratio
SO, according to the section formula, the point P will be
Now, let's compare this point P with point C.
From here, we see that for , point C divides the line segment AB in ratio 2:1. Since point C divides the line segment AB, it lies in the line joining A and B and Hence they are colinear.
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