Which table shows a proportional relationship between x and y?
x
1
2
3
6
O
у
1.5
:
3
6
9
.
x
2.
4
5
6
о
y
6
12
18
21
х
1
3
4
5
o
O
y
50
150
200
250
х
3
5
7
8
a
у
1.5
2.5
3
4.5
1
2
3
4
5
6
7
8
9
10
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