okay I attached all of your equations graphed
in the order you wrote them expect the last negative one because i can only attach up to 5 attachments, sorry!! anyways, i attached the graphs for the 3 postive first (up then down) and then the 2 negatives (up then down.)
hope this helps!
I don't really know how to explain how to graph with ^2 sorry- :) but ill think and then put it in the comment section