please answer my question with full process and please explain it. please...
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As we know when 3 points are collinear it means that 3 points are in the same line i.e. all the 3 points having same slope .
As the given points are collinear,
M1=M2
=) y2-y1/x2-x1=y4-y3/x3-x2
=) -4-1/k-8 = -5-(-4)/2-k
=) -5/k-8 = -1/2-k
=) -k+8 = -10 + 5k
=) 6k = 18
=) k = 3 .
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