Algebra 1 Vocabulary

Variable

A letter used to represent a number in equations or expressions.

Expression

A mathematical phrase containing numbers and operating symbols.

Equation

A mathematical sentence formed by placing an equal sign between two expressions.

Rational Number

A number that can be expressed as the ratio of two integers and the denominator cannot equal zero.

Function

A relation where every input has exactly one output.

Solution

A value for the variable or an ordered pair that makes an equation true.

Order of Operations

Grouping Symbols, Exponents, Multiply & Divide, Add & Subtract

Integers

Natural numbers, their opposites, and "0".

Factors

One of two or more expressions that are multiplied together to get a product.

Exponent

Tell how many times a number is used as a factor.

Slope

The ratio of the vertical change (rise) to the horizontal change (run).

Domain

The set of first elements in an ordered pair or table.

Range

The set of second elements in an ordered pair or table.

Output

The value that comes out of a formula or equation.

Input

The value you put into a formula or equation.

Distributive Property

a(b+c) = ab + ac