No, faux pas doesn't require a hyphen.
Yes.
No it doesn't require a hyphen.
"Documentation" doesn't require a hyphen.
No, the word 'together' does not require a hyphen
No, the word "part time" does not require a hyphen when used as an adjective. It is commonly written as two separate words in English language.
No it doesn't require a hyphen.
The word "affection" does not require a hyphen.
Reduced Fat has more fat in it than low fat. It is rather in-between regular and low fat.
Reduced-fat means it's lower in fat than the original product, but not necessarily "low-fat."
No it doesn't require to be hyphenated.
No, the correct spelling is extracurricular. Adding extra does not require a hyphen. For example, extraterrestrial is extra+terrestrial (no hyphen needed).