Identify which of the twelve basic functions listed below fit the description given

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

Brent wants to know what is 5 x 1/2

Which of these tables represents a non-linear function?