Question 945090
Domain is *[tex \large \{ x \, : x \in \mathbb{Z} \} ] (the set of integers)
Range is *[tex \large \{ y \, : \, y = 3k-1, k \in \mathbb{Z} \} ] which can also be written as *[tex \large \{ y \, : \, y \equiv 2 \pmod{3} \}]


The function is one-to-one.