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Source: — Data Sufficiency |
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by selango » Wed Aug 04, 2010 6:31 am
stmt1,

L1 is parallel to x=3y

x=3y

y=(1/3)x

L1 slope=1/3[Lines which are parallel have same slope]

Suff

stmt2,

(3,1)

y=mx+c

1=3m+c

No info abt C

Insuff

Pick A
Last edited by selango on Wed Aug 04, 2010 7:42 pm, edited 1 time in total.
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by clock60 » Wed Aug 04, 2010 1:36 pm
what is the slope of line l1
(1) as l1 || to the y=1/3*x , the slope of l1 must be the same or 1/3 sufficient
(2) we can`t construct the line using only one point (3,1) rescind 2 st
pick A
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by tomada » Wed Aug 04, 2010 5:15 pm
Selango, all your work was correct, but you chose the wrong answer. You'll kick yourself if you do that on the GMAT!

selango wrote:stmt1,

L1 is parallel to x=3y

x=3y

y=(1/3)x

L1 slope=1/3[Lines which are parallel have same slope]

Suff

stmt2,

(3,1)

y=mx+c

1=3m+c

No info abt C

Insuff

Pick B
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by selango » Wed Aug 04, 2010 7:41 pm
oops..My bad..Edited the post..
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