Identifying Functions

Front

What is the definition of a function?

Back

A function is a relation where every input has only ONE output.

Front

What are all the y values in a function called?

Back

Outputs.

Front

Does the mapping of these points represent a function? (Note: the left oval represents your x values and the right oval represents your y values)

Back

Function.

Front

What do the left oval and right oval represent in a function mapping?

Back

The left oval represents x values and the right oval represents y values.

Front

What are all 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

Can a function have the same output for different inputs?

Back

No, a function must have a unique output for each input.

Front

What is a relation in mathematics?

Back

A relation is a set of ordered pairs, which may or may not be a function.

Front

What is an example of a function?

Back

f(x) = 2x + 3 is a function because each input x has a unique output.