this week in math we learnt about relations and functions. and I learnt that a function is when it only has 1 partner and a relation is when it has multiple partners. for example, in a relationship your significant other is your only partner (function). But in a friendship you can have multiple friends/partners (relation).

example:

function:

1      4

4       3

6      5

relation:

7     5

7    1

7    8