Right answers: ¿Cómo andás? and ¿Dónde vivís?
The "voseo" is used as the main form of the second person of the singular tú (you) in the River Plate Spanish of Argentina, Uruguay and eastern Bolivia, and in the Paraguay's spanish.
Nevertheless, "vos" is also used in some regions of: Costa Rica, Bolivia, Chile, Peru, Ecuador, Colombia, Venezuela, Panama, Nicaragua, Honduras, El Salvador, Guatemala, Mexico and Cuba. Although, this is not used in all the countries of Latin America or all its regions.
It should be noted that this linguistic phenomenon within the Spanish (Castilian) language in which the pronoun "vos" is used along with certain particular verb conjugations instead of using the pronoun "tú" in situations of familiarity.
For example, the following two questios:
1. ¿Cómo andás (vos)?
Is used instead of ¿Cómo andas (tú)? Or ¿Cómo estás tú? (How are you?)
2. ¿Dónde vivís (vos)?
Is used instead of ¿Dónde vives (tú)? (Where do you live?)