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# GMAT PREP Practice test 2 questions

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Manager
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GMAT PREP Practice test 2 questions [#permalink]  11 Mar 2006, 01:29
Guys,need help with these. I got thm wrong
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practice test 2.xls [377 KiB]

Manager
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They are sufficient together.
slope = b-0/a-0
since slope is negative that means either b OR a is negative. ONLY one of them can be negative. according to statement 2 a is less than be therefore a is negative therefor b is positive.

Just noticed the excel file had more than one question. I answered the first. Open new threads for the others. It's much easier that way and it helps others too. Be nice if you could type it too.
Senior Manager
Joined: 22 Nov 2005
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Nice explanation trublu.

trublu wrote:
They are sufficient together.
slope = b-0/a-0
since slope is negative that means either b OR a is negative. ONLY one of them can be negative. according to statement 2 a is less than be therefore a is negative therefor b is positive.

Just noticed the excel file had more than one question. I answered the first. Open new threads for the others. It's much easier that way and it helps others too. Be nice if you could type it too.
SVP
Joined: 14 Dec 2004
Posts: 1706
Followers: 1

Kudos [?]: 59 [0], given: 0

trublu wrote:
They are sufficient together.
slope = b-0/a-0
since slope is negative that means either b OR a is negative. ONLY one of them can be negative. according to statement 2 a is less than be therefore a is negative therefor b is positive.

Just noticed the excel file had more than one question. I answered the first. Open new threads for the others. It's much easier that way and it helps others too. Be nice if you could type it too.

trublu,

Is this (red) not an assumpion?
a<b can mean,
a = 2, b = 4; a = -5, b = -2 ?
OR am I missing somthing
Manager
Joined: 24 Dec 2005
Posts: 95
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Kudos [?]: 4 [0], given: 0

yes troblu. Ill post the questions separately. thanks
Manager
Joined: 01 Feb 2006
Posts: 102
Followers: 1

Kudos [?]: 0 [0], given: 0

vivek123 wrote:
trublu wrote:
They are sufficient together.
slope = b-0/a-0
since slope is negative that means either b OR a is negative. ONLY one of them can be negative. according to statement 2 a is less than be therefore a is negative therefor b is positive.

Just noticed the excel file had more than one question. I answered the first. Open new threads for the others. It's much easier that way and it helps others too. Be nice if you could type it too.

trublu,

Is this (red) not an assumpion?
a<b can mean,
a = 2, b = 4; a = -5, b = -2 ?
OR am I missing somthing
statement 1 says that the slope is negative therefor one and only of of them can be negative. if we have (2,4) or (-5,-2) as you pointed out the slope will be positive. To have a negative slope on of the coordinates has to be negative. Hope that helps.
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