Find all School-related info fast with the new School-Specific MBA Forum
Learn more about the recent changes... close

It is currently 21 May 2013, 16:12
Customize  |  Hide

Search
Register
New posts
Unanswered

Lines k and m are parallel to each other. Is the slope of

  Question banks Downloads My Bookmarks Reviews  
  Oldest Best Reply
Search for:
 
Print view
First unread post
Author Message
TAGS:
Intern
Intern
Joined: 08 Nov 2008
Posts: 30
Followers: 0

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

Lines k and m are parallel to each other. Is the slope of [#permalink] New post 11 Nov 2008, 14:40
00:00

Question Stats:

50% (01:53) correct 50% (00:25) wrong based on 0 sessions
Lines k and m are parallel to each other. Is the slope of line k positive?
(1) Line k passes through the point (3, 2).
(2) Line m passes through the point (-3, 2).

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
Director
Director
Joined: 14 Aug 2007
Posts: 747
Followers: 6

Kudos [?]: 65 [0], given: 0

GMAT Tests User
Re: k and m ---27 [#permalink] New post 11 Nov 2008, 20:21
petercao wrote:
Lines k and m are parallel to each other. Is the slope of line k positive?
(1) Line k passes through the point (3, 2).
(2) Line m passes through the point (-3, 2).

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.


E.

2 = 3mk + ck
2= -3mm + cm

given mk=mm (parallel lines)
even after substituting this we are left with 3 unkowns , 2 equations.
Intern
Intern
Joined: 10 Jun 2010
Posts: 47
Followers: 0

Kudos [?]: 1 [0], given: 2

Re: k and m ---27 [#permalink] New post 21 Aug 2010, 21:32
shouldn't the answer be C? From 1 and 2, we have 2=3m+c and 2=-3m+c. Adding the two we get 6m=0, therefore m=0. This tells us that line k and L are straight horizontal lines. Hence, the answer should be C. Where am I going wrong? The OA E.
Director
Director
Status: Apply - Last Chance
Affiliations: IIT, Purdue, PhD, TauBetaPi
Joined: 18 Jul 2010
Posts: 694
Schools: Wharton, Sloan, Chicago, Haas
WE 1: 8 years in Oil&Gas
Followers: 13

Kudos [?]: 50 [0], given: 15

GMAT Tests User
Re: k and m ---27 [#permalink] New post 22 Aug 2010, 00:41
you are using the same equation for both the lines.. of course if a line goes through 3,2 and -3,2 it will be parallel to the x axis but that is not the question here
_________________

Consider kudos, they are good for health

Intern
Intern
Joined: 03 Aug 2010
Posts: 13
Followers: 0

Kudos [?]: 2 [0], given: 0

Re: k and m ---27 [#permalink] New post 22 Aug 2010, 10:25
@ anandnat: the constants "c" may not be same. You have assumed the constants to be same for both the lines.

Answer should be E.
Re: k and m ---27   [#permalink] 22 Aug 2010, 10:25
    Similar topics Author Replies Last post
Similar
Topics:
 New posts Lines k and m are parallel to each other. Is the slope shinewine 5 30 Aug 2006, 04:42
New posts Lines k and m are parallel to each other. Is the slope of goalsnr 1 01 Jun 2008, 13:46
New posts Lines k and m are parallel to each other. Is the slope of gmatcraze 3 23 Jul 2008, 10:00
New posts Lines k and m are parallel to each other. Is the slope of gmatcraze 1 24 Jul 2008, 06:31
New posts EXPERTS_POSTS_IN_THIS_TOPIC Lines k and m are parallel to each other. Is the slope of Orange08 3 05 Sep 2010, 06:55
Display posts from previous: Sort by

Lines k and m are parallel to each other. Is the slope of

  Question banks Downloads My Bookmarks Reviews  
Print view
First unread post

Moderators: Bunuel, VeritasPrepKarishma, IanStewart

Search for:


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

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®.

Main navigation

GMAT Resources

Partners

MBA Resources

www.gmac.com|www.mba.com