When is it appropriate to use "Yeah" and "Yep" as variants of the …
https://english.stackexchange.com/questions/1954/when-is-it-appropriate-to-use-yeah-and-yep-as-variants-of-the-word-yes
WEBLooking at the definitions given for yeah, yeh, yep, or yup, all those words are defined as exclamation & noun nonstandard spelling of yes, representing informal pronunciation. Looking at the examples provided from the Werriam-Webster Online, it seems that yeah, and yep are used in two different cases.
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