Function or 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 the relation shown a function?

• YES

• NO

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

• Yes

• No

Does the graph represent a function?

• Yes, because the vertical line test shows there are no repeating input values

• No, because the vertical line test shows there are repeating input values

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)}

Which graph is NOT a function?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

Is this mapping a function or not a function? 

• Function

• Not a Function

For the function {(0,1), (1,-3), (2,-4), (-4,1), (x,0)}, what can x NOT be in order for this to be a function?

• 0, 1, 2, 4

• 0, 1, 2, -4

• 1, -3, -4,

• 0, 1, -4, 2

Which graph does NOT pass the vertical line test?

• Graph 1

• Graph 2

• Graph 3

• Graph 4