#### Function Notation

Where $f(x)$ is the output value $y$ for a given $x$ in a function.

#### Function

A relation in which no two ordered pairs have the same first component and different second components.

#### FOIL method

The method of expanding a product of two binomials by multiplying the first, outer, inner, and last terms of the original product.

#### Factoring completely

Factoring an expression until it cannot be factored further.

#### Factoring

The reverse process of multiplying polynomials using the distributive property.

#### Factor

If $a$ and $b$ are positive integers, then $a$ is a factor (or divisor) of $b$ if and only if a divides evenly into $b$.