Graphs
G
Does this table show y as a function of x?
Yes!!
Do the ordered pairs express y as a function of x?
(2,3) (4,5) (6,7) (-2,-3)
Yes!
Is this a function?
Yes! Each input (x) has only ONE output (y)
Is this a function?
No!
Inputs have more than one output
Does this table express y as a function of x?
No!!
Do the ordered pairs express y as a function of x?
(1,8) (2,23) (9,19) (1,19)
No!
Does this mapping represent y as a function of x?
No!
Zero produces two outputs (0, -2) and (0, 1)
A
Does this table express y as a function of x?
No!!
3 has multiple outputs (3, -1) and (3, 1)
Do the ordered pairs express y as a function of x?
(25, 17) (84, 96) (13, 7) (84, -96)
No!
Is this a function?
Yes!