7.1.3 Algebraic Expressions

Definitions

• • Variable --> A symbol (often a letter) that represents an unknown quantity

  • Algebra --> Branch of mathematics that involves expressions with variables

  • Algebraic Expressions --> Contains variables, numbers, and at least one operation

  • Coefficient --> The numerical factor of a multiplication expression that contains a variable

  • Define a Variable --> Choosing a variable to represent an unknown quantity

In the example above, the 9 and the 6 are examples of coefficients.