Question

What is the domain and range of {(4,2),(1,3),(3,3),(6,4)}?

Answer 1

Domain: `{1,3,4,6}rArr` listed in increasing order
Range: `{2,3,4}rArr` listed in increasing order

Explanation:

Since these points are single points and are not connected by lines, you would not have `{x in RR}`, which means "`x` can be any real number". They would only be single x-coordinates.

Although the y-coordinate, `3`, appears more than once in one of the points, you only list it once in the range. You should never have two of the same numbers in a domain or range.