1. 
Which of the following sets is NOT a relation? > {(A, B), (Q, Z)}

2. 
What is the domain of the relation {(1, 2), (3, 4), (5, 6), (7, 8)}? > {1, 3, 5, 7}

3. 
Which of the following ordered pairs is NOT in the relation described by the equation x^{2} + x – 6 = y^{2}? > (3, 0)

4. 
Which of the following relations IS a function? > {(1, 0), (2, 0), (3, 0)}

5. 
The following graph shows > the relation {(0, 1), (0, 2), (0, 3), (0, 4)}

6. 
The following graph shows > False

7. 
The graph shows a function. > About 77% true, 23% false

8. 
The graph shows a function. > True

9. 
The graph shows a function. > True

10. 
The graph shows a function. > True
