We can solve this question using matching operations (my favorite Quantitative Comparison strategy)

First, replace \(y\) with \(9x^2\) to get:
Quantity A: \(x\)
Quantity B: \(9x^2\)

Since we're told \(x\) is POSITIVE, we can safely divide both quantities by \(x\) to get:
Quantity A: \(1\)
Quantity B: \(9x\)

Divide both quantities by \(9\) to get:
Quantity A: \(\frac{1}{9}\)
Quantity B: \(x\)

Since we're told x is an integer greater than 0, then x can equal 1, 2, 3, 4, ...etc
In every case, Quantity B is greater.

Answer: B

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