Question

Can someone explain to me how to do these questions? Will fan and medal!

a. Give an example of a relation with at least 4 ordered pairs

b. What is the domain of your relation?


c. What is the range of your relation?


d. Is your relation a function? Why or why not?


Thank you so very much!

Answer 1

You need to make up some numbers! It's asking you for a relation with 4 ordered pairs. So you would need to make up 4 ordered pairs to answer these questions.
For example:
(1,2) (3,4) (5,6) (7,8)
Those are my four ordered pairs.

To find your domain you need to look at all your X values. Your domain would be all of your X values in a row! You can write it like this:
domain {1, 3, 5, 7}

Your range is all of the Y values. You do the same thing you did for the domain, like this:
range {2, 4, 6, 8}

Functions mean that the X values only go to ONE Y value. The set that I gave you is a function because there are no X values that go to two Y values. Here is an example of a set that is NOT a function:
(1,2) (3,4) (3,7) (5,6)
The X value 3 here meets with both y=4 and y=7. That is not a function.

Hope I helped!

Answer 2

Thank you so much! You helped so much! (:

Answer 3

No problem! :)