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. If we examine the table, we do not see any x-value with different y-values.
Input, x
Output, y
- 1
0
0
1
1
4
2
4
3
8
Although the y-value 4 is paired with multiple x-values (1 and 2), the relation is a function because there are not x-values paired with multiple y-values.
