| Discussion: | All Topics in PreCalculus for Properties of Rational Functions |
| Topic: | Need some quick help |
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| Subject: | Need some quick help |
| Author: | Tryin |
| Date: | Jul 31 2004 |
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I have just went out and purchased some software to help educate myself with
Algabra. However, I do need some quick help on the following problems. If
anyone can help me, It would be deeply appreciated. I'm trying to help my kid
but I am not doing a good job at all. Thanks
1. Which of the following are functions? Explain your reasoning for a, b, and
c.
a. f(x) = 2 if x>1
f(x) = -1 otherwise
b. f(x) = 5 if x>0
f(x) = -5 if x<0
f(x) = 5 or -5 if x = 0
c. f(x) = 10/x
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