In the xy-plane, region R consists of all the points (x,y) : DS Archive
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In the xy-plane, region R consists of all the points (x,y)

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In the xy-plane, region R consists of all the points (x,y) [#permalink]

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26 Feb 2008, 16:30
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In the xy-plane, region R consists of all the points (x,y) such that 2x + 3y = 6.
Is the point (r,s) in region R.
1) 3r + 2s = 6
2) r =3, & s= 2

This looks trivial but I got it wrong..
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Re: DS - Points in a region [#permalink]

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26 Feb 2008, 18:55
B

2x + 3y = 6 represents a line.

1. insufficient. not all values that satisfy 3r + 2s = 6 lie on the above line.
2. sufficient. (3,2) is not on the above line.

What is OA?
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Re: DS - Points in a region [#permalink]

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26 Feb 2008, 19:16
The OA is E, but i think it's incorrect.
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Re: DS - Points in a region [#permalink]

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27 Feb 2008, 06:25
E is the OA??? thats odd. Whats the source?
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Re: DS - Points in a region [#permalink]

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05 Mar 2008, 11:57
bumpin this back for some more feedback.
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Re: DS - Points in a region [#permalink]

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05 Mar 2008, 17:04
I don't agree with OA.

Stmt1: Insuff

Stmt2: Suff as this point does not lie on the line.

So 'B'
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Re: DS - Points in a region [#permalink]

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05 Mar 2008, 17:11
i am also getting B.

what is the sourse for this question?
could you please give us the OE.
Re: DS - Points in a region   [#permalink] 05 Mar 2008, 17:11
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