To find porportionality, you must note that: the x and y must have the same value throughout the table when multiplied.
For example:
x | y
------------
1 | 2
2 | 4
etc.
In this case, it is multiplied by 2. Now let us look at the problem
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Table 2 is your answer because, you are multiplying -1 each time
x(-1) = y is your equation
To check, plug in the x, and see if the y is the same value
(-1)(-1) = 1 (True)
(-3)(-1) = 3 (True)
(-5)(-1) = 5 (True)
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hope this helps