Function and Evaluating Functions

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function

Which relation is NOT a function?

• {(1,-5), (3,1), (-5,4), (4,-2)}
• {(2,7), (3,7), (4,7), (5,8)}
• {(1,-5), (-1,6), (1,5), (6,-3)}
• {(3,-2), (5,-6), (7,7), (8,8)}