Find the value of x for which the points (x, –1), (2, 1) and (4, 5) are collinear.

+1 vote
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asked Feb 8, 2018 in Mathematics by Rohit Singh (61,782 points) 35 133 357
Find the value of x for which the points (x, –1), (2, 1) and (4, 5) are collinear.

1 Answer

+1 vote
answered Feb 8, 2018 by sameer (82,980 points) 5 11 37
selected Feb 17, 2018 by sanjeev
 
Best answer

If points A (x, –1), B (2, 1), and C (4, 5) are collinear, then
Slope of AB = Slope of BC

Thus, the required value of x is 1.

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