Review for Test Unit 2 and 4

Is this mapping a function or not a function? 

• Function
• Not a Function 

Is the relation a function? 
{(4,5), (4,-7), (4,2), (4,0), (4,9)}

• Yes
• No

Is this table a function or not a function? 

• Function
• Not a Function

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.
• Yes, because each x-value has only one y-value paired with it.
• No, because the x-value 11 has two y-values pair with it.
• No, because each x-value has only one y-value paired with it.

Is this a function or not?

• Function

• Not a Function

Is this a function?

• Yes

• No

• Let me ask my dog...

• Why are there letters in math?

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 set of values is not a function?

• {(9,5) (10,5) (4,-5) (8,-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 set of ordered pairs a function or not a function? 

• Function
• Not a Function 

Choose the best answer that describes the image.

• Function
• Relation
• Function and Relation
• Neither a relation nor a function