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 Related Terms
Linear Inequality:  An inequality in two variables for which the graphs of the solutions form a half-plane on one side of a line and may or may not also form the line itself.
 Variable: A letter or symbol used to represent a number. Half-plane: The portion of a plane on one side of a line extending on the plane. Equivalent Equations: Equations that have the same solutions. Function: A rule of matching elements of two sets of numbers in which an input value from the first set has only one output value in the second set. Linear Equation: An equation whose solution is a straight line. Linear Function: An equation in which the graphs of the solutions form a (non-vertical) line. Solution: A number (or ordered pair of numbers, or set of numbers) that produces a true statement when substituted for the variable(s) in an equation or inequality. Solving an Equation: Finding all the values of the variable(s) that make an equation true. Solving an Inequality: Finding all the values of the variable(s) that make the inequality true. Inequality: Any mathematical sentence that contains the symbols >(greater than), <(less than), <(less than or equal to), or >(greater than or equal to).