# Homework - Section 2.2

```Homework for Lecture #5
Bring these to class to hand in at the start of lecture 6.
If you have any questions about how to do something, bring your questions, too.
Section
2.2
Homework Problems
(In the form #14(answer)
)
Pictures: Is the relation a function?
Is the equation a function?
Additionally, make sure to explain
(briefly) WHY it is or is not a function!
#27
#29
#30 (yes)
#32 (see example #5 in the
section)
#15 (yes + your explanation)
#16 (no + your explanation)
#19 (yes + your explanation)
#24 (no + your explanation)
Find the domain of each function:
2.3
#47 (All real numbers)
#48 (All real numbers)
#49 (All real numbers)
#50 (All real numbers)
#51 x x  4, x   4
#52 x x  2 x   2
#57 x x  9
#58 x x  4
Keep in mind that for every homework assignment, you should do as many problems as
you need to really have some confidence that you understand the material. If that means
you need to do more than what’s listed here, then you should do those extra problems.
```