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What is the result when the point \\(1,2\\) is substituted into the inequality \\(x+y\\leq 3\\)?

Answer and explanation

Correct answer: True

Substituting the coordinates of \\(1,2\\) into \\(x+y\\leq 3\\) gives \\(1+2\\leq 3\\), or \\(3\\leq 3\\). This is true because equality is included in the symbol \\(\\leq\\). Hence, the point lies on the boundary line \\(x+y=3\\). Exam tip: To test a point in an inequality, substitute its coordinates and check whether the resulting statement is true.

Related tags

Linear InequalitiesPoint TestingBoundary LineCoordinate GeometryAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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