Function Notation and Properties
Function, function, what's your...function?
Definition of Function
A function is a relationship between two variables such that for each value of the independent variable there corresponds exactly one value of the dependent variable.
Domain and Range
The domain of a function is the set of all values (inputs) of the independent variable for which the function is defined.
The range of a function is the set of all values (outputs) assumed by the dependent variable.
Function
Each input has exactly 1 output.
Not a function
There are more than 1 output for each input.
Not a function
There are more than 1 output for each input.