Determine if the given table represent a Direct Proportion. Write A if YES and B if not.

1. X - 4 3 2 1
Y - 20 15 10 5

2. X- 6 8 10 12
Y- 18 24 30 36

3. X- 1 2 3 4
Y- 36 18 12 9

4. X- 2 4 5 10
Y- 50 25 20 10

5. X- 3 4 5 6
Y- 30 40 50 60
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