"My family lives in Boston."
Translation:Familia mea Bostoniae habitat.
Mea could be meus. If anything, masculine should be the normal answer. Lives can be habito, habitare, habtavi or vivo, vivare, vixi
Familia is a feminine noun. Since mea goes with familia, feminine it has to be.
Habito, habitare is like to stay in, to live in (hence, habitat); vivo, vivere is to be alive, or live in general (hence, vivacious, revive, etc).
Volgav vitsenanieff nivya kevach varatsach.
meus, mea, meum needs to pair in gender with the noun. Here, familia, familiae, f.
This means it must be mea.
vivo is not the same as habito, and the real meaning of this sentence in English necessitates habito rather than vivo.