100 POINTS!! and brainiest! Which of these sets of coordinates are proportional?
A. (3, 1), (6, 2), (9, 3)
B. (2, 4), (4, 6), (7, 9)
C. (1.5, 3), (3, 6), (4, 8)
D. (3, 1), (4, 3), (8, 6)

Divide x by Y for each set if they all have the same value they are proportional:

A: 3/1 = 3, 6/2 = 3, 9/3 = 3 This is proportional.

B: 2/4 = 1/2, 4/6 = 2/3, 7/9 = 7/9, Not proportional.

C: 1.5/3 = 1/2, 3/6 = 1/2, 4/8 = 1/2 This is proportional.

D: 3/1 = 3, 4/3 = 1 1/3, 8/6 = 1 1/3, Not proportional.

The answers are A and C are proportional.

answer: howdy

step-by-step explanation: