Which of the following tables of x- and y-values represents a function?

Question

x 7 8 2 5 1 7
y 7 5 9 2 5 4x 7 8 2 5 1 7 y 7 5 9 2 5 4 ,

x 9 4 2 5 9 4
y 7 4 9 2 5 1x 9 4 2 5 9 4 y 7 4 9 2 5 1 ,

x 1 3 7 5 2 4
y 6 6 6 6 6 6x 1 3 7 5 2 4 y 6 6 6 6 6 6 ,

x 1 3 2 5 2 4
y 6 4 3 3 5 1

Answer 1

The third table of x- and y-values represents a function.