makmcmo
contestada

PLZ HELP ASAP 15 pts
Which of the following tables represents a function?


x 4 4 9 9
y 2 −2 3 −3

x 2 −2 3 −3
y 4 4 9 −9

x 1 −1 1 −1
y 4 5 6 7

x 5 5 6 6
y 1 2 3 4