If the area of the triangle with vertices i+y j, i+2 k and 3 i+ k is 6 sq. units, then the values of y are

MHT CET 2022 Mathematics question

If the area of the triangle with vertices and is sq. units, then the values of y are

Answer: (A)

Let , , . Then and , and . Area . Setting this equal to gives , i.e.

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Question ID VK-093746