Which graph represents a proportional relationship?
OA
0 15 8 25 20 15 10
40
35
30
5
OB 40'
103232226
35
25
15
5
。
c 40
$ 15 0 0 0 15 105
o
35
30
25
20
OD 40
10608220
35
30
25
15
5
10
10
10
30
20
40
10 20
30
20
50
40 50 60
20 30 40
60 x
30 40 50 60 1
50
g