1. 2.2 Homework A
1. Which of these charts represent functions?
A)
Input, X 0 3 9 12 15
Output, Y 3 3 3 3 3
B)
Input, X 0 2 2 5 7
Output, Y 1 3 7 12 16
C)
Input, X 0 2 4 6 8
Output, Y 0 4 16 36 64
D)
Input, X 1 3 4 4 7
Output, Y 2 5 10 14 19
2. Which of these sets of ordered pairs represent functions?
(a) {( ) ( ) ( ) ( )}
(b) {( ) ( ) ( ) ( )}
(c) {( ) ( ) ( ) ( )}
(d) {( ) ( ) ( )}

2. 3. Which of these graphs represent functions?
A) C)
B) D)
4. If ( ) , find ( ).
5. If ( ) √ , find ( )
6. If ( ) find ( ).
7. If ( ) , find ( ).
For #8-10, let ( ) {
8. Find ( ).
9. Find ( ).
10. Find ( )