by Marc Grober.
Ken offers good advice, but if dvips is not in /usr/bin, then latex is not likely there either... but
[yourhost]$ whereis latex
Is a good way to find out where the binaries are, if they are installed.
However, if you have reviewed the discussions on Moodle and LaTex you will have discovered that the Tex filter is old and in need of some repair, so that unless you are in need of TeX feature that cannot be met by MathJax, you would be well advised to use MathJax instead, and the installation is quick, painless, can support a broader set of display and parsing features, and can be easily installed alongside jsxgraph via additionalhtml-> head