1. The problem statement, all variables and given/known data http://i.imgur.com/vqyXW.png 2. Relevant equations 3. The attempt at a solution I got the DOmain and Range of the graph, but then it says to do the same for the functions a-d. If you graph them then they are all straight lines so there's really only a domain. But when I checked at the back of the book, the answers came to be A)0 B)-1 C)0 D)-2 I'm sure I'm missing something. Any help is appreciated. Thank you.