# math 1.pdf - ALEKS Charles Garrett 11:56:46 PM EDT...

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1. Charles Garrett - 04/08/2017 11:56:46 PM EDT Developmental Math / 1174 MAT104 Spring 2017 &ndash; BENJELLOUN - MAT104546VA016-1174-001 (BENJELLOUN) Union and intersection of intervals and are sets of real numbers defined as follows. Write and using interval notation. If the set is empty , write . The set is the interval . It is graphed below. The set is the interval . It is graphed below. The set is the intersection of the sets. It consists of only those numbers that are in both and . The graph of is the region of overlap for the graphs of and . Here, and do not overlap anywhere. The set is empty. So, we get that . The set is the union of the sets.