Graphing Function and Non-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

Is this mapping a function or not a function? 

• Function
• Not a Function

Is this set of ordered pairs 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 mapping a function or not a function? 

• Function
• Not a Function 

Is this set of ordered pairs a function or not a function? 

• Function
• Not a Function 

Is the graph pictured a function?

• Yes
• No

.

• Function
• Not a Function

Is this set of ordered pairs a function or not a function? 

• Function
• Not a Function 

• Function
• Not a Function