I graduated with a degree in Math-Computer Science(dual degree) from a college in the US in 2012, and have been working in the Software industry ever since. From 2012 to mid 2014 I was a software engineer and since then, I have been an operations engineer(maintaining servers and stuff).
Even though my degree is Math-CS, most of my major courses and electives are in math and I've been thinking about going back to school to get a master's in some discipline of math. But I worry about whether I'll be able to pick up the material in school after being away from the field for a few years. My question is should I be reviewing materials prior to attending grad school? (Such as calculus/Algebra/Real Analysis(by Rudin) etcetc). Should I know everything undergrad courses cover in Analysis/Algebra before thinking about going to grad school? I realized most syllabuses for grad school application says "One quarter in Analysis, One quarter in Algebra, One quarter in Linear Algebra" or something along that line, but I feel that may not be enough preparation.
If it helps, I am thinking about going to grad school to either do industry work/teach math and not necessarily to do research, so I am not thinking about a PhD at all.