Function vs Non-Functions

Look at the table.

Is the relation a function?

• Yes

• No

Look at the graph.

Is this relation a function?

• Yes

• No

Does the mapping represent a function?

• It does represent a function because each input has one output.

• It does represent a function because each output has one input.

• It does not represent a function because an input has more than one output.

• It does not represent a function because an output has more than one input.

Does this mapping diagram represent a function?

• No, because there are repeating input values

• Yes, because there are no repeating input values

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)

What is the test to determine if a graph represents a function?

• Horizontal line test

• Vertical line test

Is this a function?

• Function

• Not a Function

Is this a function?

• Yes

• No

Look at this set of ordered pairs: (4, 13), (1, 12), (6, 9)

Is this relation a function?

• Yes

• No

Which of these relations is a function?

• 
• 
• 
•