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

It is currently 27 Dec 2014, 07:47

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

In the xy-plane, the line with equation ax + by + c = 0,

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 03 Oct 2008
Posts: 63
Followers: 0

Kudos [?]: 5 [0], given: 0

In the xy-plane, the line with equation ax + by + c = 0, [#permalink] New post 07 Oct 2008, 12:31
In the xy-plane, the line with equation ax + by + c = 0, where abc ≠ 0, has slope 2/3 . What is the value of b?
(1) a = 4
(2) c = −6

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.
Senior Manager
Senior Manager
User avatar
Joined: 29 Mar 2008
Posts: 350
Followers: 4

Kudos [?]: 51 [0], given: 0

Re: math---xyplane [#permalink] New post 07 Oct 2008, 13:05
albany09 wrote:
In the xy-plane, the line with equation ax + by + c = 0, where abc ≠ 0, has slope 2/3 . What is the value of b?
(1) a = 4
(2) c = −6


The equation can be rewritten as, y=(-a/b)x+(-c/b).
The slope (-a/b)=2/3

ST1: Using a=4, we can calculate b Suff
ST2: We can't calculate b using c. Insuff

Hence (A)
_________________

To find what you seek in the road of life, the best proverb of all is that which says:
"Leave no stone unturned."
-Edward Bulwer Lytton


Last edited by leonidas on 07 Oct 2008, 15:00, edited 1 time in total.
Director
Director
avatar
Joined: 23 May 2008
Posts: 840
Followers: 3

Kudos [?]: 33 [0], given: 0

Re: math---xyplane [#permalink] New post 07 Oct 2008, 14:22
leonidas wrote:
albany09 wrote:
In the xy-plane, the line with equation ax + by + c = 0, where abc ≠ 0, has slope 2/3 . What is the value of b?
(1) a = 4
(2) c = −6


The equation can be rewritten as, y=(-a/b)x+(-c).
The slope (-a/b)=2/3

ST1: Using a=4, we can calculate b Suff
ST2: We can't calculate b using c. Insuff

Hence (A)


should this be -c/b? not that it matters to solve the problem
Senior Manager
Senior Manager
User avatar
Joined: 29 Mar 2008
Posts: 350
Followers: 4

Kudos [?]: 51 [0], given: 0

Re: math---xyplane [#permalink] New post 07 Oct 2008, 15:01
bigtreezl wrote:
leonidas wrote:
albany09 wrote:
In the xy-plane, the line with equation ax + by + c = 0, where abc ≠ 0, has slope 2/3 . What is the value of b?
(1) a = 4
(2) c = −6


The equation can be rewritten as, y=(-a/b)x+(-c).
The slope (-a/b)=2/3

ST1: Using a=4, we can calculate b Suff
ST2: We can't calculate b using c. Insuff

Hence (A)


should this be -c/b? not that it matters to solve the problem


yes it is c/b. I updated my post. Good catch.......
_________________

To find what you seek in the road of life, the best proverb of all is that which says:
"Leave no stone unturned."
-Edward Bulwer Lytton

Re: math---xyplane   [#permalink] 07 Oct 2008, 15:01
    Similar topics Author Replies Last post
Similar
Topics:
In the xy-plane, the line with equation ax + by + c = 0, ConkergMat 2 23 Jan 2009, 18:57
1 In the xy-plane, the line with equation ax + by + c = 0, Nihit 3 19 Sep 2008, 09:42
In the xy-plane, the line with equation ax + by + c = 0, singh_amit19 2 06 Oct 2007, 22:02
In the xy-plane, the line with equation ax + by + c = 0 jet1445 8 05 Jun 2007, 19:41
In the xy-plane, the line with equation ax + by + c = 0, M8 6 25 Apr 2006, 11:35
Display posts from previous: Sort by

In the xy-plane, the line with equation ax + by + c = 0,

  Question banks Downloads My Bookmarks Reviews Important topics  


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®.