Practice Functions of Equations

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
I. Answer the following questions and then check your score!

Input (x) 2 5 7 8
Output (y) 14 35 49 56

List the numbers in the DOMAIN

List the numbers in the RANGE


II. True or False: The following is a function.

Input Output
1 15
3 20
5 15
7 20


III. True or False: The following is a function.

Input Output
2 0
2 1
4 2
7 3