Question

How do I know how to determine whether a relation is a function? What is a function?

Input: Output:
-3 11

0 5

3 -1

6 -7

9 -13​

Answer 1

it’s a function is every single input has their own output. for example, if there were 2 -3’a on the input side, the relation wouldn’t be a function because each input has to have their OWN output, and can’t share outputs.

Answer 2

all are functions

Explanation:

a function is when each x has a y

a relation is when 1 x has more than 1 y which makes it invalid therefore not a function