Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 03 May 2015, 07:29

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# ds - gmatprep - xy-plane

Author Message
TAGS:
Manager
Joined: 09 Dec 2006
Posts: 98
Followers: 1

Kudos [?]: 10 [0], given: 0

ds - gmatprep - xy-plane [#permalink]  09 Sep 2007, 13:05
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
ds
Attachments

untitled.JPG [ 11.74 KiB | Viewed 549 times ]

VP
Joined: 10 Jun 2007
Posts: 1465
Followers: 6

Kudos [?]: 133 [0], given: 0

Re: ds - gmatprep - xy-plane [#permalink]  09 Sep 2007, 13:18
Piter wrote:
ds

C.

(1) The point (a,b) can be at quadrant II and IV, and this means that b is either positive or negative. INSUFFICIENT

(2) a<b doesn't tell us much. This can basically be true for all quadrants. INSUFFICIENT.

Together, you know that (a,b) is in quadrant II and IV. In IV, b is negative and a is positive. Since b>a, this means that it cannot be in quadrant IV. This leaves us with only quadrant II. In quadrant II, a is always negative, b is always positive.

SUFFICIENT
CEO
Joined: 29 Mar 2007
Posts: 2591
Followers: 16

Kudos [?]: 234 [0], given: 0

Re: ds - gmatprep - xy-plane [#permalink]  09 Sep 2007, 19:51
Piter wrote:
ds

S1:
slope of line k is negative. So the slope can be -a/b or a/-b.

Insuff.

S2: a<b

Doesnt help us. too many options for a and b.

Together.

since S1 says that a or b must be negative and S2 says a<b. a must be the negative number. So b is positive.

C.

Much better than the XY plane Q i got on my GMATPrep...
Senior Manager
Joined: 27 Aug 2007
Posts: 253
Followers: 1

Kudos [?]: 10 [0], given: 0

Good question... need more of this kind.

Ans: C
GMAT Club Legend
Joined: 07 Jul 2004
Posts: 5078
Location: Singapore
Followers: 22

Kudos [?]: 184 [0], given: 0

I go with B.
Attachments

line.doc [26 KiB]

VP
Joined: 28 Mar 2006
Posts: 1384
Followers: 2

Kudos [?]: 19 [0], given: 0

ywilfred wrote:
I go with B.

It could be in III quadrant where A could be less than B but at the same time B<0.

So I think C is correct
Manager
Status: Post MBA, working in the area of Development Finance
Joined: 09 Oct 2006
Posts: 170
Location: Africa
Followers: 1

Kudos [?]: 3 [0], given: 1

Re: ds - gmatprep - xy-plane [#permalink]  10 Sep 2007, 04:16
The slope will be b/a
The line passes through the origin. It will have value of -x, y in quadrant II and x, -y in quadrant IV.
Combining the two statements, it can be deduced that the point a,b is in quadrant II.

Regards.
GMATBLACKBELT wrote:
Piter wrote:
ds

S1:
slope of line k is negative. So the slope can be -a/b or a/-b.

Insuff.

S2: a<b

Doesnt help us. too many options for a and b.

Together.

since S1 says that a or b must be negative and S2 says a<b. a must be the negative number. So b is positive.

C.

Much better than the XY plane Q i got on my GMATPrep...
Re: ds - gmatprep - xy-plane   [#permalink] 10 Sep 2007, 04:16
Similar topics Replies Last post
Similar
Topics:
GMATPrep - DS 6 10 Aug 2006, 14:02
GMATPREP DS 1 03 Aug 2006, 22:36
GMATPrep - DS 4 29 Jul 2006, 15:52
DS : Gmatprep 12 17 Jul 2006, 12:34
GMATPREP DS 5 30 May 2006, 16:22
Display posts from previous: Sort by

# ds - gmatprep - xy-plane

 Powered by phpBB © phpBB Group and phpBB SEO Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.