Identifying Functions

Front

What are all of the y values in a function called?

Back

Outputs

Front

Which graph is NOT a function?

Back

Graph 1

Front

What is the definition of a function?

Back

Every input has only ONE output.

Front

Is the graph pictured a function?

Back

No

Front

What are all of the x values in a function called?

Back

Inputs

Front

What is the domain of a function?

Back

The set of all possible input values (x values).

Front

What is the range of a function?

Back

The set of all possible output values (y values).

Front

What does it mean for a relation to be a function?

Back

Each input is related to exactly one output.

Front

Can a function have the same output for different inputs?

Back

Yes, a function can have the same output for different inputs.

Front

What is a vertical line test?

Back

A method to determine if a graph represents a function; if a vertical line crosses the graph more than once, it is not a function.