Final answer:
To determine if the quadrilateral ABCD is a parallelogram, we need to check if opposite sides have the same slope. AB and DC have the same slope (0), so the quadrilateral ABCD is a parallelogram.
Step-by-step explanation:
To determine if the quadrilateral ABCD is a parallelogram, we need to check if opposite sides have the same slope. Let's find the slopes of AB and DC.
AB: slope = (change in y) / (change in x) = (3 - 3) / (4 - (-1)) = 0 / 5 = 0
DC: slope = (change in y) / (change in x) = (-1 - (-1)) / (2 - (-3)) = 0 / 5 = 0
Since AB and DC have the same slope (0), the quadrilateral ABCD is a parallelogram.