Definition of a Function

Determine whether the mapping diagram represents a function.

• Function

• Not a function

Determine whether the mapping diagram represents a function.

• Function

• Not a function

Determine whether the table of values represents a function.

• Function

• Not a function

Determine whether the table of values represents a function.

• Function

• Not a function

What is the definition of function?

• Has inputs and outputs

• Every input has only ONE output

• Inputs have different outputs every time

• x-values and y-values

What is the definition of function?

• Has inputs and outputs

• Every input has only ONE output

• Inputs have different outputs every time

• x-values and y-values

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.

• Yes, because each x-value has only one y-value paired with it.

• No, because the x-value 11 has two y-values pair with it.

• No, because each x-value has only one y-value paired with it.

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)

• Function

• Not a Function

This mapping diagram represents a function: (a)  

• No, because an input value goes to

• Yes, because each input goes to one

• Yes
• No