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Which of the following sets is represented on the number line by two separate rays and therefore cannot be expressed by a single linear inequality?

Answer and explanation

Correct answer: \(x\le -1\text{ or }x>2\)

For \(x\le -1\text{ or }x>2\), the number line contains one ray extending left from \(-1\) and another ray extending right from \(2\). The part \((-1,2]\) is excluded, so the solution set is disconnected. A single linear inequality normally gives one half-line on the number line. Options A, B, and C each represent only one ray. Exam tip: When you see “or”, check whether the solution is a union of separate parts.

Related tags

Linear InequalitiesNumber LineSolution SetsInterval RepresentationUnion Of IntervalsRepresentation On Number LineMathematicsClass 11 Mcq

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