The vertices of a triangle are

MATHEMATICS · Single correct · CBSE · Mathematics · Coordinate Geometry · Coordinate Geometry

Problem

The vertices of a triangle are P(1,−2)P(1,-2), Q(5,4)Q(5,4) and R(3,y)R(3,y). If its area is 99 square units, which of the following values of yy satisfy this condition? (a) y=5.5y=5.5 only (b) y=3.25 or y=−1.25y=3.25\text{ or }y=-1.25 (c) y=5.5 or y=−3.5y=5.5\text{ or }y=-3.5 (d) y=5 or y=−3y=5\text{ or }y=-3

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