Question

If R= {(1,2), (3,4), (5,6), (8,9)} find the domain and range of R a. Find value of X and Y.​

Answer 1

The Domain and Range of a Set of Ordered Pairs

Answer:

Domain:
`x \in \{ 1, 3, 5, 8 \}`

Range:
`y \in \{ 2, 4, 6, 9 \}`

Explanation:

We are given the set of ordered pairs:
`R`. The Domain is just the set containing all the
`x` values of each ordered pair of
`R`. Recall that in the ordered pair
`(a,b)`,
`a` is the
`x` value. In set
`R`, we can see that the
`x` values are
`\{ 1, 3, 5, 8 \}`.

For the Range, it is just the set containing all the
`y` values of each ordered pair of
`R`. Recall that in the ordered pair
`(a,b)`,
`b` is the
`y` value. In set
`R`, we can see that the
`y` values are
`\{ 2, 4, 6, 9 \}`.