Answer:
6 square units
Explanation:
Graph this rectangle. Doing so shows that it's located in Quadrants II and III. The length is the distance between (-3,1) and (0, -2): √(9+9), or 3√2
The width is the distance between (-4,0) and (-3,1), or √(1+1) = √2.
The area is (length)(width) = 3√2 * √2 = 3(2) = 6 square units.