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If the boundary line is \(x+2y=6\) and the inequality is \(x+2y\leq 6\), what type of line is drawn?

Answer and explanation

Correct answer: Solid line

The inequality \(x+2y\leq 6\) includes equality. Hence, the points on the boundary line \(x+2y=6\) belong to the solution region, so the boundary is drawn as a solid line. A dashed line is used only for strict inequalities such as \(<\) or \(>\). Exam tip: draw a solid boundary whenever \(\leq\) or \(\geq\) appears.

Related tags

Linear InequalitiesGraphical SolutionBoundary LineSolid LineTwo VariablesGraphical Solution Of Linear Inequalities In Two VariablesMathematicsClass 11 Mcq

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