** Algebraic Equation ** - An equation that contains one or more variables.

** Algebraic Expression ** - An expression that contains one or more variables.

** Coefficient ** - The number that is multiplied by the variable(s) in a single term. In the term 67*rt*, *rt* has a coefficient of 67.

** Constant ** - A term that does not contain any variables.

** Empty Set ** - A set with no members; also called the null set. Denoted Ø.

** Equation ** - Sets two expressions equal to each other.

** Expression ** - A "phrase" that represents a number.

** Like Terms ** - Terms that contain the exact same variables raised to the same exponents, possibly with different coefficients.

** Multiplicative Inverse Property ** - For every

*a*, there exists a number

such that

*a*× = 1.

is called the reciprocal of

*a*, or the multiplicative inverse of

*a*.

** Null Set ** - A set with no members; also called the empty set. Denoted Ø.

** Properties of Equality ** -

Properties of Equality

** Properties of Operations and Identities ** -

Properties of Operations and Identities

** Quotient Property ** -

*a*× = .

** Reciprocal ** - The number

is called the reciprocal of

*a*. When

*a* is multiplied by its reciprocal, the result is 1.

** Replacement Set ** - A set of values from which to find a solution.

** Simplified Form ** - The form of an expression after like terms have been combined; equivalent to the original expression.

** Solution ** - Any value of a variable that makes the specified equation true.

** Solution Set ** - The set of all variables that makes the specified equation true.

** Term ** - A single number or the product of a number and one or more variables.

** Variable ** - A symbol used to represent a number.

** Zero Product Property ** - If *ab* = 0, than *a* = 0 or *b* = 0 (or both).