"et toi" or"et vous"
When people enquire someone "how's everything going" in french ,and out of politeness ,the person be enquired always say"and you",i saw two version of "and you" in french.When i talk to some french they always say"et toi",but when i read the book,it show"et vous"to me?so what's different between "et toi"and"et vous"?