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In mathematics, the absolute value or modulus of a real number , denoted , is the non-negative value of without regard to its sign. Namely, if is a positive number, and if is negative (in which case negating makes positive), and . For example, the absolute value of 3 is 3, and the absolute value of −3 is also 3.
Learn what absolute value means and how to use it in math. Find examples, definitions, symbols, and tips for absolute value in algebra and number lines.
To solve absolute value equations, find x values that make the expression inside the absolute value positive or negative the constant. To graph absolute value functions, plot two lines for the positive and negative cases that meet at the expression's zero.
Learn how to think about absolute value as distance from zero, and practice finding absolute values. See examples, problems, tips, and comments from other learners.
Learn what absolute value is, how to evaluate expressions with absolute value, and how to graph absolute value functions. See the properties of absolute value, such as the triangle inequality and the absolute value of a sum or difference.
This topic covers: Solving absolute value equations. Graphing absolute value functions. Solving absolute value inequalities.
Absolute value. The absolute value of a real number, also referred to as its modulus, is the non-negative value of x without any regard for the sign of x; the absolute value of a number is always either positive or 0.
