by way of example....
- Do you have a display system installed?
- What system did you install?
- Does it work at all and if so how do you know it works and where does it work and where doesn't it work
- If it doesn't work, what have you done to resolve that it does not work (knowing that displaying Tex in a quiz is a more complex task than, for example, displaying tex in a Moodle web resource)?
- Why are threads such as this, which explore the broken image problem, not helpful (https://moodle.org/mod/forum/discuss.php?d=33073)