Final answer:
By calculating the lengths and slopes of the sides of the quadrilateral with given vertices, one can determine the type of quadrilateral they form.
Step-by-step explanation:
The type of quadrilateral with vertices A(-3, 3), B(3, 1), C(4, -3), and D(-2, -1) can be determined by calculating the lengths and slopes of the four sides. First, the length of each side is found using the distance formula

The slope of each side is found using the formula slope
. Then the information about the lengths and slopes can be analyzed to determine the type of quadrilateral formed by these vertices.