prove that (1,2),(5,3),(18,6)are collinear
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if the points are collinear, The slopes of lines joining any 2 points which are collinear are equal
Slope of 2 points can be given by m=y2-y1/x2-x1
Slope of (1,2),(5,3)= 3-2/5-1 = 1/4
Slope of (5,3),(17,6) = 3/12=1/4
Similarly other
(OR)
We can prove it by taking area=0 (determinant method)
Hope the answer helps you thank you
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