9x-7 / y = 0 (x, y is not equal to 0), X and y are proportional to (), why?

9x-7 / y = 0 (x, y is not equal to 0), X and y are proportional to (), why?

9x-7/y=0
9x=7/y
9xy=7
xy=7/9
So x and y are (inversely) proportional
Explanation: when the quotient of two quantities is fixed, it is in positive proportion, and when the product is fixed, it is in inverse proportion

If x × 6 = y × 7 and X and y are not equal to 0, then x must be greater than y?

Wrong. X = 7 / 6 y

If three-quarters of x equals two-thirds of Y, then x: y = (): ()

If three quarters of x equals two thirds of Y, then x: y = (8): (9)