Relation Function Vertical Line

Is this graph a function or not a function? 

• Function 
• Not a Function

Which graph is NOT a function?

• Graph 1
• Graph 2
• Graph 3
• Graph 4

Which graph is a function?

• Graph 1
• Graph 2
• Graph 3
• Graph 4

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function