1. Representing Functions
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If a relation is a function, how many y-values can any one x-value have?
Domain: {-12, -10, -8, -6}
Range: {0, 1, 2, 4}
Yes, it is a function.
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.
| Domain | Range |
|---|---|
| -12 | 0 |
| -10 | 1 |
| -8 | 2 |
| -6 | 4 |
Since each input x has only one output, the relation in the table is a function.