This might help
https://nwsaenglishii.wordpress.com/2013/12/13/dyaspora-by-joanne-hyppolite/
A. True! Slang and colloquialism both mean speaking casually with conversations as opposed to formally.
Answer:
Mercutio says this as a way to say "Your family feud has caused my death!" The houses referring to each family.
What type of essay is it?
Since its a sibling, and siblings tend to be in a person's close circle of people, informal speech is used.