Which of the following tables represents a linear function?


x 1 1 0 1 1
y −2 −1 0 1 2

x 0 1 2 3 4
y −3 2 0 −2 3

x −2 −1 0 1 2
y 2 0 −1 0 2

x −2 −1 0 1 2
y 3 1 −1 −3 −5

explain in deep detail and tell me how can you tell that it is a linear function