Is it possible to make graphs in questions using tikz? Or must I insert it as a picture? I wanted to ask a question about graph theory. Thanks in advance!
Tikz does not (yet!) work.
You can compile the diagram into a pdf file, turn that into a png file (or another format), and embed that in a question.
In linux, I usually do this with
pdftops filename.pdf - | pstopnm | pnmtopng > filename.png