Functions

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

All of the x values or inputs are called what?

• Domain
• Range
• Relation
• Function

Which of these is NOT the same

• Range

• Input

• Y-Value

Give the domain and range. Tell if it is a function.

• D: {-4, -2, 0, 2} R: {-2, -2, 1, 1} Function

• D: {-4, -2, 0, 2} R: {-2, 1} Function

• D: {-4, -2, 0, 2} R: {-2, -2, 1, 1} Not a Function

• D: {-4, -2, 0, 2} R: {-2, 1} Not a Function

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.

Is this mapping a function or not a function? 

• Function
• Not a Function

Is this graph a function or not a function? 

• Function 
• Not a Function 

Is this graph a function or not a function? 

• Function
• Not a Function

Is this graph a function or not a function? 

• Function
• Not a Function 

• Function
• Not a Function