Hi, English isn’t my mother tongue so I was asking myself that question since I first encounted a w/… Back then I was like: “What tf does ‘w slash’ stand for?” And when I found out I was like “How, why, and is it any intuitive?” But I never dared to ask that until now
If that annoys you, never get into advanced maths. There’s arbitrary symbols that make no sense like 3 dots in a triangle means therefore. An upside down capital A means for all.
But that’s a different use case. It’s math, not everyday written language.