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Which point satisfies both inequalities x+y≤5 and x≥y?

Answer and explanation

Correct answer: (3,1)

A point belongs to the common solution region only when it satisfies every inequality in the system. Test option A, (3,1): its coordinate sum is 3+1=4, and 4≤5 is true; also 3≥1 is true. Thus (3,1) satisfies both conditions. For option B, (4,3), the first inequality fails because 4+3=7>5. For option C, (1,4), the sum condition is true, but x≥y is false because 1<4. For option D, (2,4), both the sum condition 6≤5 and the comparison 2≥4 fail. Therefore option A is the only unambiguous answer. Graphically, it lies in the intersection of the half-planes below or on x+y=5 and on the side x≥y.

Related tags

Linear InequalitiesFeasible PointHalf-Plane IntersectionGraphical Solution Of Linear Inequalities In Two VariablesMathematicsClass 11 Mcq

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