Determine if a Relation is a Function or Not

Which relation is not a function?

• <(p>{(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)}

Which relation is a function?

• {(0,1), (1,2), (3,3), (3,4)}

• {(0,2), (1,3), (2,3), (3,2)}

• {(1,3), (2,2), (2,0), (3,4)}

• {(1,2), (2,2), (3,2), (1,3)}

Is this graph a function or not a function? 

• Function

• Not a Function

Is this graph a function or not a function? 

• Function 

• Not a Function 

Which graph is not a function?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

Is this graph a function or not a function? 

• Function

• Not a Function

Is this table a function or not a function? 

• Function

• Not a Function 

Is the relation in this table a function?

• Yes, each input has exactly one output

• No, each input has more than one output

• No, the cost of the movies is different

• Yes, each output has exactly one input

Is this mapping a function or not a function? 

• Function

• Not a Function

Determine if the relation is a function

• Not a function, each input has more than one output

• Yes it is a function, because each input has exactly on output

• Not a function, input is equal to output

• Yes it is a function, -1/2 is a fraction of 2