This math topic involves identifying function domains for various polynomial functions of higher degrees (mostly cubics), specifically by choosing the correct number line representation of each domain. The problems display functions expressed algebraically, and learners must select the correct number line image that accurately reflects the set of all possible x-values (domain) for the given function. Each question provides two potential number line images from which the correct one must be chosen, emphasizing foundational understanding in function behavior and how it translates to graphical interpretations on a number line.

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