Is If a Function?

Does the graph below represent a function?

• Yes, it represents a function because each input is paired with exactly one output.

• No, it does not represent a function because not every input is paired with exactly one output.

Which of these tables represent a function?

• A

• B

• C

• D

Which graph is a function?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

Does the table below represent a function?

• Yes, it represents a function because each input is paired with exactly one output.

• No, it does not represent a function because not every input is paired with exactly one output.

Does this mapping diagram represent a function?

• No, because an input value goes to multiple output values

• Yes, because each input goes to one and only one output

Is this mapping a function or not a function? 

• Function

• 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)

Which example is not a function? 

• Example 1 and 3

• Example 2 and 3 

• Example 2 

• Example 1

Which graph does NOT pass the vertical line test?

• Graph 1

• Graph 2

• Graph 3

• Graph 4