The area of a quadrilateral is 28 sq. units. If the co-ordinates of it – InterviewSolution

1.

The area of a quadrilateral is 28 sq. units. If the co-ordinates of its angular points be (-1, 6), (-2, -4), (3, -2) and (a, b), then show that, 2a + b = 6 or, 2a + b + 22 =0please help please

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