Absolute value expressions represent the distance between a number and zero on a number line. It always returns a non-negative value.
Inequality: A mathematical statement that compares two values using symbols like <, >, ≤, or ≥.
Piecewise Function: A function that is defined by different rules or formulas for different parts of its domain.
Domain and Range: The set of all possible input values (domain) and output values (range) of a function.