A function is a relation between a set of inputs and a set of permissible outputs such that each input is related to exactly one output. Functions are often represented by $f(x)$ where $x$ is the input variable.
5 Must Know Facts For Your Next Test
A function can be defined using different types of expressions such as equations, tables, and graphs.
The domain of a function is the complete set of possible input values (x-values) that produce valid outputs.
The range of a function is the complete set of all possible resulting output values (y-values).
A function passes the vertical line test if no vertical line intersects its graph more than once.
Function notation $f(x)$ specifies that $f$ is a function with $x$ as its input variable.