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What does testing the origin \((0,0)\) in \(y\leq \frac{x}{2}+2\) show?

Answer and explanation

Correct answer: shade the side containing the origin

Substituting the origin gives \(0\leq \frac{0}{2}+2\), i.e., \(0\leq 2\), which is true. Therefore, the half-plane on the side containing the origin is the solution region. Since the sign is \(\leq\), the boundary line is also included; it is not removed. Exam tip: if a test point makes an inequality true, shade the side containing that point.

Related tags

Linear InequalitiesGraphical SolutionTest PointOriginHalf PlaneBoundary LineGraphical Solution Of Linear Inequalities In Two VariablesMathematics

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