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 Related Terms
 Equivalent Equations:  Equations that have the same solutions.
Inequality: Any mathematical sentence that contains the symbols >(greater than), <(less than), <(less than or equal to), or >(greater than or equal to).
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.
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.
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.
Addition Property of Equality: Adding the same number to each side of an equation produces an equivalent expression.
Subtraction Property of Equality: States that when both sides of an equation have the same number subtracted from them, the remaining expressions are still equal.