Q. 2 C5.0( 1 Vote )

Using determinant

Answer :

Given: – (3, – 2), (8, 8) and (5, 2) are three points

Tip: – For Three points to be collinear, the area of triangle formed by these points will be zero


Now, we know that,


vertices of a triangle are (x1,y1), (x2,y2) and (x3,y3), then the area of the triangle is given by:



Now,


Substituting given value in above formula



R.H.S



Expanding along R1





= 0


= LHS


Since, Area of triangle is zero


Hence, points are collinear.


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