Function or Not a Function?

Front

What is the definition of a function?

Back

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

Front

Is this table a function or not a function?

Back

Not a Function

Front

Does this mapping diagram represent a function?

Back

Yes, because each input goes to one and only one output.

Front

What test do you use to determine if a graph is a function?

Back

The vertical line test.

Front

If a graph passes the vertical line test, what can you conclude?

Back

It is a function.

Front

What does it mean if a relation has multiple outputs for a single input?

Back

It is not a function.

Front

What is an example of a function?

Back

y = 2x + 3 is a function because each x-value has one corresponding y-value.

Front

What is an example of a relation that is not a function?

Back

y^2 = x is not a function because each x-value can have two y-values.

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).