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Which number line interval represents \(2(x-1)\le x+4\)?

Answer and explanation

Correct answer: \(( -\infty,6]\)

Simplifying \(2(x-1)\le x+4\) gives \(2x-2\le x+4\). Subtracting \(x\) from both sides gives \(x\le 6\). Hence, all values less than or equal to 6 are solutions, represented by \(( -\infty,6]\). Option C is the closest distractor, but it excludes 6. Exam tip: Use a closed bracket when the inequality contains \(\le\) or \(\ge\).

Related tags

Linear InequalitiesNumber LineInterval NotationSolving InequalitiesClass 11 MathematicsRepresentation On Number LineMathematicsClass 11 Mcq

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