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Which point lies in the common region of y ≥ 0 and y ≤ 2x?

Answer and explanation

Correct answer: (2, 3)

A point lies in the common region only if it satisfies both inequalities at the same time. For option A, (x,y)=(2,3): the first condition gives 3≥0, which is true, and the second gives 3≤2(2)=4, also true. For option B, y≤2x becomes 3≤2, which is false. For option C, it becomes 1≤2(−1)=−2, which is false, even though its y-value is positive. For option D, y≥0 is true, but y≤2x becomes 2≤0, which is false. Therefore only option A belongs to the intersection of the two half-planes. The governing concept is simultaneous satisfaction: passing one inequality is insufficient when a common region is requested.

Related tags

Linear InequalitiesCommon RegionPoint TestingGraphical SolutionGraphical Solution Of Linear Inequalities In Two VariablesMathematicsClass 11 Mcq

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