Function Domain/Range Definition - Inequality to Interval (With Union)

Level 1

This math topic focuses on converting inequalities into interval notation, specifically incorporating unions to describe domains and ranges of functions. The problems involve interpreting inequalities, such as "X < 9 or 12 < X," and selecting from provided interval notation options like "(-∞, 9) ∪ (12, ∞)." This practice helps develop skills in understanding and applying mathematical expressions for function boundaries within a range of real numbers, critical for topics in calculus and advanced algebra.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

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Function Domain/Range Definition - Inequality to Interval (With Union)


What interval describes this domain?

8<X<5 or 2<X7-8 < X < -5\text{{ or }}-2 < X \le 7

?