Here is a link to download this Free software "Graph"
It is a great program.
P.s It isn't really clear what the function is for the 1st one some a made my best guess.
I hope this helps
Been a while since I graphed. I'm not able to post the graphs I got so maybe someone can give me a general idea of what it would look like so I can see what I have on paper is correct.
Thanks in advance.