Question

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Answer 1

Step-by-step explanation:

we can say that points are collinear when they don't make any triangle

area of triangle = 1/2 ×[ x1 (y2-y3) + x2 (y3-y1)+ x3 (y1-y2) }

here,

1/2 ×[ -4 (3-{3/2}) + 2({3/2}+6) + 1(-6-3)

1/2×{-4(6-3/2)+2(3+12/2)+1(-9)

1/2×{-4(3/2)+2(15/2)-9

1/2×{-6+15-9}

1/2 [ 0 ]

=0