Name _____________________________ Date ___________________
Coordinate Geometry
Determine whether the line AB is parallel to line CD.

 1 Line AB: (-8, 4) and (2, -1)Line CD: (-9, 0) and (-8, -3)
 2 Line AB: (-5, 5) and (-7, -9)Line CD: (3, 13) and (1, -1)
 3 Line AB: (-3, 2) and (7, 0)Line CD: (-8, 7) and (-4, -13)
 4 Line AB: (6, -6) and (-8, 3)Line CD: (-9, -1) and (0, -15)
 5 Line AB: (7, -6) and (-5, -5)Line CD: (6, 1) and (0, 1)
 6 Line AB: (9, 1) and (-4, -5)Line CD: (5, -3) and (-8, -9)
 7 Line AB: (4, -4) and (-4, 3)Line CD: (11, 3) and (3, 10)
 8 Line AB: (0, 3) and (2, -2)Line CD: (-8, 8) and (-6, 3)
 9 Line AB: (4, -5) and (1, 9)Line CD: (-6, -8) and (-20, -5)
 10 Line AB: (-3, 1) and (9, 7)Line CD: (9, 4) and (-15, -44)
 11 Line AB: (-11, 19) and (4, -8)Line CD: (-3, 2) and (-19, 7)
 12 Line AB: (13, 11) and (16, -14)Line CD: (27, 25) and (30, 0)
 13 Line AB: (-6, 8) and (-2, -4)Line CD: (11, 25) and (15, 13)
 14 Line AB: (-12, 17) and (-1, -16)Line CD: (-5, -17) and (-5, 17)
 15 Line AB: (13, -18) and (30, -7)Line CD: (8, 1) and (41, 52)
 16 Line AB: (-12, -6) and (-4, -7)Line CD: (11, 4) and (14, -20)
 17 Line AB: (-6, 4) and (47, -84)Line CD: (-94, -84) and (-41, -172)
 18 Line AB: (-88, -94) and (55, -11)Line CD: (29, -45) and (-70, 95)