if the points (1 "-1)" (2 3) and (k 3) are collinear then the value of k
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Answer:
k=2
Step-by-step explanation:
refer the attachment above
the lines at side of numbers are just mods neglect it and multiply it to ½
it is just for converting negative values to positive but here it is 0 that's why no need of mod
the formula mentioned above is the area of triangle in co-ordinate geometry and when the area is zero the points are collinear
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