check weather (1,-1),(4,-1),(-2,3) Are collinear or not
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Answer:
No they are not collinear
Explanation:
To check that they are collinear or not we can use this formula
The condition of collinearity is x1(y2 - y3) +X2(y3 - y1) + X3(y1 - y2) =0
given points are (1,-1),(4,-1),(-2,3)
x1=1 x2=4 x3=-2
y1=-1 y2=-1 y3=3
= 1(-1 -3) +4(3 - (-1) ) +(-2)(-1 - (-1) )
= -4 + 16 + 0
= 12
which is not equal to zero
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