Question

is the relation a function?
(14,15),(5,7),(3,10),(11,1),(5,8)

Answer 1

is there a repeated number in the first coordinate or are they all different?

Answer 2

\[\large (14,15),(\color{red}5,7),(3,10),(11,1),(\color{red}5,8)\]

Answer 3

looks like a repeated 5
so NOT a function

Answer 4

oh ok, thank you (: