Answer to Question #287641 in Discrete Mathematics for maddyG

Question

Identify the mapping diagram that represents the relation and determine whether the relation is a function(−3,−6),(−1,−6),(5,−6),(8,−6)

Answer 1

This arrow diagram does define a function because

1. Every element of $X$ has an arrow coming out of it.

2. No element of $X$ has two arrows coming out of it that point to two different elements of $Y.$