A: The three most important things that will guide you are these:
- What career you are interested in.
- Whether you have Core Maths as a subject or Maths Literacy. (The only other subjects which matter are Physical Science and Art).
- What your marks are, and particularly in Maths (and sometimes Physical Science) or Maths Literacy.
MATHS LITERACY:
You can choose from these qualifications (200 in all).
https://careerplanet.co.za/ncv-subject-choices-from-grade-9-with-or-without-maths-literacy/
CORE MATHS
Please see this article about Core Maths as part of your subject choice.
https://careerplanet.co.za/what-careers-can-i-study-for-with-core-mathematics-as-one-of-my-subjects/
The best advice is to go through and download the prospectus/student guide which most institutions offer.
Note: you must try to get the one for the year you intend to study.