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What is the position of (2,2) with respect to x+2y≤6?

Answer and explanation

Correct answer: on boundary line

The governing concept is the point-testing method for a linear inequality. To determine the position of a point, substitute its coordinates into the left-hand expression and compare the result with the right-hand side. For (2,2), x+2y=2+2(2)=2+4=6. Thus the inequality becomes 6≤6, which is true with equality. The point therefore belongs to the solution set and lies exactly on the boundary line x+2y=6, rather than strictly inside either half-plane. Because the inequality is non-strict, the boundary is included in the solution region. Hence option B is correct. An interior point would make x+2y<6, whereas an exterior point would give x+2y>6. Option D is unnecessary because direct substitution determines the position.

Related tags

Linear InequalitiesBoundary PointPoint TestClass 11Graphical Solution Of Linear Inequalities In Two VariablesMathematicsClass 11 Mcq

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