This math topic focuses on practicing the identification of function domains, specifically for functions that involve simple square roots of linear expressions. The problems require determining the appropriate domain that returns real numbers when plotted on a number line. Each function is presented, and learners must choose the correct number line representation that showcases the valid range of x-values. This set of problems serves as foundational practice in understanding how linear expressions under square roots affect the domain of a function.

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