Question

[3.05] Which of the following does not represent a function?


x −12 −5 11 14 17
y −5 −2 −2 8 34

x −10 1 3 8 10
y −2 2 7 8 10

x 5 10 10 12 18
y 1 4 22 5 4

x 4 5 6 8 10
y 4 −4 12 −8 6