This math topic focuses on determining the domain of functions where the numerator is linear and the denominator is quadratic with real roots. Specifically, students are tasked with identifying the sets that describe the domain of these functions. The functions are presented as algebraic fractions, and students need to consider values that satisfy the function’s condition without causing undefined expressions (like division by zero). As part of a broader unit encompassing Functions - Domain and Range Solving Practice, it sharpens skills in analyzing function structure, solving inequalities, and defining valid input values for real-world applications.