Graphs
Tables
Ordered Pairs
Mappings
100


G

100

Does this table show y as a function of x?


Yes!!

100

Do the ordered pairs express y as a function of x?

(2,3) (4,5) (6,7) (-2,-3)

Yes!

100

Is this a function?

Yes! Each input (x) has only ONE output (y)

200

Is this a function?


No! 

Inputs have more than one output

200

Does this table express y as a function of x?


No!!

200

Do the ordered pairs express y as a function of x?

(1,8) (2,23) (9,19) (1,19)

No!

200

Does this mapping represent y as a function of x?


No!

Zero produces two outputs (0, -2) and (0, 1)

300


A

300

Does this table express y as a function of x?


No!!

3 has multiple outputs (3, -1) and (3, 1)

300

Do the ordered pairs express y as a function of x?

(25, 17) (84, 96) (13, 7) (84, -96)

No!

300

Is this a function?

Yes!

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