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If the representation of (x) is from (-6) to (4) and only (4) is included, what is the interval?

Answer and explanation

Correct answer: \((-6,4]\)

Since \(-6\) is not included, an open bracket \((\) is used at \(-6\). Since \(4\) is included, a closed bracket \(]\) is used at \(4\). Therefore, the interval is \((-6,4]\). In \([-6,4)\), \(-6\) is included and \(4\) is excluded, so it is not correct. Exam tip: use a square bracket for an included endpoint and a round bracket for an excluded endpoint.

Related tags

Linear InequalitiesInterval NotationNumber LineOpen EndpointClosed EndpointRepresentation On Number LineMathematicsClass 11 Mcq

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