Finding 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

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function

Is the graph pictured a function?

• Yes
• No

• Function 
• Not a Function

Is this graph a function or not a function? 

• Function
• Not a Function

Is this relation a function?

• Yes
• No

Which graph is a function?

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