Data Sufficiency (DS) | Re: Is x = 1/y?

Target question: Is x = 1/y?

Statement 1: xy = 1
This tells us thaty does NOT equal 0 (and x does NOT equal 0 too)
So, if we take xy = 1 and divide both sides by y, we getx = 1/y
PERFECT, this is exactly what we are looking for.
Since we can answer thetarget question with certainty, statement 1 is SUFFICIENT

Statement 2: 1/(xy) = 1 This tells us that x and y do NOT equal 0
So, we can take 1/(xy) and multiply both
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