Using the Integers 0-9 (and only each Integer once), create a set of ordered pair that represents a Function.

f(x) = ( , ),( , ),( , ),( , ),( , )

Graph the Ordered Pairs

Using the Rational Numbers 0-9 (and only each once), create a set of ordered pair that does not represents a Function.

( , ),( , ),( , ),( , )

Graph the Ordered Pairs

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And I had a thought! If they are only to use each digit once then it is impossible for the same x-value to have 2 y-values, so every choice is representing a function.

It is possible, they only need 4 ordered pair instead of 5. Look at the vocabulary as well.

I did it !!!!!!!!!!

x y

0 5

1 6

4 7

and

8/2 9

Almost, you are missing a number. 🙂