100 points (pls asap, show work too! )

the coordinates of the vertices of quadrilateral abcd are a(−5, 1) , b(−2, 5) , c(5, 3) , and d(2, −1) .

the slope of ab is , the slope of bc is , the slope of cd is , and the slope of ad is . quadrilateral abcd is

choices:
-2/7

-1/3

3/2

4/3

a parallelogram

a trapezoid

neither a parallelogram or trapezoid

both pairs of opposite sides are parallel

only one pair of opposite sides is parallel

neither pair of opposite sides is parallel