If a relation is a function, how many y-values can any one x-value have?
Yes, see solution.
Practice makes perfect
For a relation to be a function, each x-value can only be paired with one y-value, but one y-value can be paired with multiple x-values.
Let's look at the given values.
Input
2
4
6
8
10
Output
1
2
3
4
3
Since each input x has only one output, the relation in the table is a function.
