Absolute Value EquationsA series of free Basic Algebra Lessons from Brightstorm online Algebra series.
Definitions and Applications of Absolute Value Sometimes we need to use only positive numbers, and the absolute value is a useful tool for this purpose. When you see an absolute value in a problem or equation, it means that whatever is inside the absolute value is always positive. Absolute values are often used in problems involving distance and are sometimes used with inequalities. Later we will discuss graphs of absolute value equations and inequalities.
Absolute Value Equations Solving for a variable in absolute value equations follows different rules than when we solve multi-step equations. When solving absolute value equations, most of the time we get more than one possible solution. Using absolute value equations, we are able to solve more complex concepts such as absolute values with inequalities, and graphs of absolute value inequalities with two variables.
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