Question

Which one of the sets below is a function explain why.

(3,4) (4,5) (5,6) (6,7) (1,6) (1,7) (3,4) (2,8)

Answer 1

functions cant have the same x vaule

im not sure which is a "set" since all the numbers are all under the same line

(3,4) (4,5) (5,6) (6,7) would be function

(1,6) (1,7) (3,4) (2,8) wouldnt be a function because of the 1