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can a ratio have a negative number

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by ddddddddddd » Mon Jul 04, 2011 4:40 am
If there are two values: x and y, and the relationship between them is x=-2y,
can the ratio of those two values be expressed as -2:1. (x:y)

Is it technically incorrect?
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by amit2k9 » Mon Jul 04, 2011 5:52 am
the ratio will be x = -2y meaning x/y = -2/1 or x:y :: -2:1.
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by ddddddddddd » Mon Jul 04, 2011 6:11 am
I was asking if having a ratio with a negative number is correct or not.
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by Ian Stewart » Mon Jul 04, 2011 9:44 am
You will never have a ratio involving a negative quantity on the GMAT.
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by squ » Wed Mar 06, 2013 1:28 am
Sorry for bumping this but found it relevant.

If x and y are integers, what is the ratio of 3y to x?

(2) 4x2 = 9y2

according to the explanation the statement is insufficient since x/y can be + or -. I marked it as sufficient since I thought you are only concerned about the proportions of the numbers and not their exact values.
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