Identifying functions

Front

The following is not a function because...

• There are two values that equal 2.
• x = 10 and x = 40 has two values each.
• In the f(x) column, the 5 repeats.
• This table is actually a function.

Back

x = 10 and x = 40 has two values each.

Front

Which set of ordered pairs is a function? Options: {(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)}

Back

{(6,-5), (7, -3), (8, -1), (9, 1)}

Front

Does this mapping diagram represent a function?

Back

Yes, because each input goes to one and only one output

Front

Is this graph a function or not a function? Options: Function, Not a Function

Back

Function

Front

How do you use the vertical line test?

Back

Draw vertical lines through your graph. If any of the vertical lines you draw intersects the graph more than once then the graph is not the graph of a function.

Front

Is this mapping a function or not a function?

Back

Not a Function; the x's repeat

Front

Is this graph a function or not a function? Options: Function, Not a Function

Back

Function

Front

Is this a function or not a function?

Back

Not a Function

Front

Is this a function or not a function?

Back

Function

Front

Which graph is NOT a function? Options: Graph 1, Graph 2, Graph 3, Graph 4

Back

Graph 1