Functions/Not

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

Is this table a function or not a function? 

• Function
• Not a Function

Is this graph a function or not a function? 

• Function
• Not a Function

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

Is this graph a function or not a function? 

• Function 
• Not a Function 

The x values present the...

• Output
• Input
• Ordered Pair
• Point

The y-values represent the...

• Input
• Output
• Ordered pair
• Point

What is a function?

• Any set of ordered pairs
• When each input has two outputs
• When each input has exactly one output
• When the input matches to two different outputs

the output of a function

• x-values

• Dependent Variable

• Independent Variable

• Domain