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Mathematics 11 Online
OpenStudy (autumn9913):

Express the following number line in Interval Notation.

OpenStudy (autumn9913):

OpenStudy (davejavous):

If 4 is included in the range: \[ x \in (-\infty , 4]\] If 4 is not included in the range: \[ x \in (-\infty , 4)\] Infinity is always a round bracket.

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