A way to chose tags is to browse the list of all tags sorted by popularity http://math.stackexchange.com/tags?tab=popular For all the more popular tags there is a brief description and instruction available.

Take one that fits about alright. Generally there should at least by one tag that is general. In the specific case as already mention algebra-precalculus seems like a good choice.

A way to chose tags is to browse the list of all tags sorted by popularity https://math.stackexchange.com/tags?tab=popular For all the more popular tags there is a brief description and instruction available.

Take one that fits about alright. Generally there should at least by one tag that is general. In the specific case as already mention algebra-precalculus seems like a good choice.