Determine if each set of coordinates form a horizontal or vertical line.
a. (-3, 6) & (-3, 2)
b. (8, 4) & (-3, 4)
c. (11, -5) & (-9, -5)
d. (9, -3) & (9, -12)

Determine if each set of coordinates form a horizontal or vertical line a 3 6 amp 3 2 b 8 4 amp 3 4 c 11 5 amp 9 5 d 9 3 amp 9 12 class=