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On the number line a ray starts at (1) and goes right with an open dot at (1). Which interval is correct?

Answer and explanation

Correct answer: ((1,\infty))

The open dot excludes (1) and the right direction shows greater values. In exams infinity endpoints always use round brackets.

Related tags

Linear InequalitiesInfinite IntervalOpen PointNumber LineRepresentation On Number LineMathematicsClass 11 Mcq

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