What's the value of x?

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect

Agrid shows the positions of a subway stop and your house. the subway stop is located at (-5,2) and your house is located at (-9,9). what is the distance, to the nearest unit, between your house and the subway stop?