Functions f(x), g(x), h(x), k(y)

Definition

Functions are mathematical relationships that assign a unique output value to each input value. They can be represented by equations, graphs, or tables.

Related terms

Domain:

The set of all possible input values for a function.

Range:

The set of all possible output values for a function.

Composite Function:

A combination of two or more functions where the output of one function becomes the input of another function.