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Which of the following solution sets cannot be expressed by only one linear inequality in one variable?

Answer and explanation

Correct answer: \(-1<x\le 4\)

A single linear inequality in one variable, such as \(ax+b<0\) with \(a\ne0\), gives a ray of the form \(x<c\), \(x\le c\), \(x>c\), or \(x\ge c\). Option C, \(-1<x\le4\), is a bounded interval with two finite endpoints. It requires both conditions \(x>-1\) and \(x\le4\) simultaneously. Options A, B, and D are each single-boundary rays. Exam tip: A solution set with two finite endpoints usually requires more than one inequality.

Related tags

Linear InequalitiesNumber LineSolution SetsInterval NotationClass 11 MathematicsRepresentation On Number LineMathematicsClass 11 Mcq

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