If a relation is a function, how many y-values can each x-value have?
Domain: {- 3, 0, 2, 4, 5 } Range: {- 2, 1, 2, 3, 7 } Is It a Function? Yes
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.
( - 3, 2),
( 4, 1),
( 0, 3),
( 5, - 2),
( 2, 7)
Examining the ordered pairs, we can see that there is no x-value with multiple y-values. Therefore, the relation is a function.
Now let's look for the domain and range of the given coordinate pairs. The domain of a function is found by listing the relation's x-values. The range is found by listing the relation's y-values.
Domain:& { - 3, 0, 2, 4, 5 }
Range:& { - 2, 1, 2, 3, 7 }
