1.

The points A (1, 2), B (3, 5), C (7, 8) are collinear.(a) True(b) FalseI had been asked this question at a job interview.Query is from Various Forms of the Equation of a Line topic in chapter Straight Lines of Mathematics – Class 11

Answer»

Correct choice is (b) False

To explain: We KNOW, SLOPE of LINE joining TWO points (x1, y1) and (x2, y2) is GIVEN by(y2-y1)/(x2-x1).

Slope of line AB = (5-2)/(3-1) = 3/2

Slope of line BC = (8-5)/(7-3) = 3/4

Since slope of AB is not equal to BC so, points are not collinear.



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