Show points(-1,-1),(2,3)and(6,11) are collinear
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1/2|-1(3-11)+2(12)+6(-4)|
1/2|8+24-24|
4 not equal to 0.
i.e., area of triangle formed by those points is not equal to 0.
so points are not collinear
1/2|8+24-24|
4 not equal to 0.
i.e., area of triangle formed by those points is not equal to 0.
so points are not collinear
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