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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, 02:29
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.
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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.
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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
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yes troblu. Ill post the questions separately. thanks
Manager
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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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