This topic focuses on translating the definition of the domain or range of a function from words to interval notation, specifically without using unions. It involves identifying sets described in verbal statements and expressing them using precise mathematical interval notation, such as "\(-\infty, 8]\)" or "\([-5,1]\)". The problems cover varying types of intervals, including infinite intervals and bounded ranges, helping learners understand and practice domain and range concepts in an introductory setting. Each problem presents different interval notation options to select the correct representation of the verbal description given.