Here are the essential concepts you must grasp in order to answer the question correctly.
Absolute Value
Absolute value measures the distance of a number from zero on the number line, regardless of direction. For any real number x, the absolute value is denoted as |x| and is defined as |x| = x if x ≥ 0, and |x| = -x if x < 0. Understanding absolute value is crucial for solving inequalities that involve expressions within absolute value symbols.
Recommended video:
Parabolas as Conic Sections Example 1
Inequalities
Inequalities express a relationship between two expressions that are not necessarily equal. They can be strict (using < or >) or non-strict (using ≤ or ≥). When solving absolute value inequalities, it is important to consider both the positive and negative scenarios that arise from the definition of absolute value, leading to two separate inequalities to solve.
Recommended video:
Solving Linear Equations
Solving linear equations involves finding the value of the variable that makes the equation true. In the context of absolute value inequalities, this often requires isolating the variable and simplifying the resulting expressions. Mastery of linear equations is essential, as the solutions to the inequalities will typically involve linear expressions that need to be solved for the variable.
Recommended video:
Solving Linear Equations with Fractions