Function?

Is this a function?

• Yes

• No

• Maybe

• It's a curvy line

Is this a function?

• Yes

• No

• Maybe

• I like circles

Is this a function?

• Yes

• No

• I bet Ms. Byrd is laughing at me? maybe it's a trick!

• Why is this so easy?

Is this a function?

• Yes

• No

• I'm Confused

• May I phone a friend?

Is this a function?

• Yes

• No

• Let me ask my dog...

• Why are there letters in math?

Is this graph a function or not a function? 

• Function
• Not a Function

Which of these tables represent a function?

• A
• B
• C
• D

• It is a function because no vertical lines hit it twice.

• It's not a function because a vertical line hits it twice.

• It's not a function because no vertical lines hit it twice.

• It is a function because a vertical line hits it twice.

• It is a function because no vertical lines hit it twice.
• It's not a function because a vertical line hits it twice.
• It's not a function because no vertical lines hit it twice.
• It is a function because a vertical line hits it twice.

• It is a function because no vertical lines hit it twice.
• It's not a function because a vertical line hits it twice.
• It's not a function because no vertical lines hit it twice.
• It is a function because a vertical line hits it twice.