Algebra Vocabulary

Variable- Is a symbol for a number we don't know. It is usually a letter x or y.

Constant- A number on it's own.

Coefficient- A number used to multiply a variable. In 7x is a variable, 7 is the coefficient.

4 is coefficient.
x is variable.
7 and 5 is constants.

Term- either a single number or variable, or numbers and variables multiplied together.

"Like Terms"-Terms with the same variable and exponents x, 3x and 21x are like terms. 3q and q2 are not like terms.

"Gather like terms"- put all terms with the same variable together 6x, 2x, -1x . 7x.

Evaluate- substitute a # for the variables.