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

It is currently 21 Oct 2014, 08:53

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

If Line k in the xy-plane has equation y = mx + b, where m

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
1 KUDOS received
Manager
Manager
avatar
Joined: 14 Jan 2006
Posts: 92
Schools: HKUST
Followers: 1

Kudos [?]: 28 [1] , given: 0

If Line k in the xy-plane has equation y = mx + b, where m [#permalink] New post 01 Oct 2008, 00:51
1
This post received
KUDOS
If Line k in the xy-plane has equation y = mx + b, where m and b are constants, what is
the slope of k?
(1) k is parallel to the line with equation y = (1-m)x + b +1.
(2) k intersects the line with equation y = 2x + 3 at the point (2, 7).
Manager
Manager
avatar
Joined: 30 Sep 2008
Posts: 113
Followers: 1

Kudos [?]: 9 [0], given: 0

Re: GMAT SET 16 - 5 [#permalink] New post 01 Oct 2008, 07:17
(1) insufficient

k is parallel to the line with equation y = (1-m)x + b + 1
=> m = 1 - m <=> m = 1/2, b is unknown

(2) sufficient (only 1 line intersects with another line at the particular point)

The answer is B
1 KUDOS received
Manager
Manager
avatar
Joined: 27 Aug 2008
Posts: 150
Followers: 0

Kudos [?]: 30 [1] , given: 0

Re: GMAT SET 16 - 5 [#permalink] New post 01 Oct 2008, 07:27
1
This post received
KUDOS
nikhilpoddar wrote:
If Line k in the xy-plane has equation y = mx + b, where m and b are constants, what is
the slope of k?
(1) k is parallel to the line with equation y = (1-m)x + b +1.
(2) k intersects the line with equation y = 2x + 3 at the point (2, 7).


We have to find slope of K i.e. m.

1) Sufficient: parallel lines have equal slopes. =>m= 1-m => m=1/2

2) Insufficient: 7=2m + b, B is unknown, hence cant calculate m.

Ans: A
Manager
Manager
avatar
Joined: 27 Sep 2008
Posts: 77
Followers: 1

Kudos [?]: 7 [0], given: 0

Re: GMAT SET 16 - 5 [#permalink] New post 01 Oct 2008, 09:50
I second (A) same logic as jatinrai
SVP
SVP
avatar
Joined: 17 Jun 2008
Posts: 1578
Followers: 12

Kudos [?]: 186 [0], given: 0

Re: GMAT SET 16 - 5 [#permalink] New post 01 Oct 2008, 11:33
lylya4 wrote:
(1) insufficient

k is parallel to the line with equation y = (1-m)x + b + 1
=> m = 1 - m <=> m = 1/2, b is unknown

(2) sufficient (only 1 line intersects with another line at the particular point)

The answer is B


lyla4, the question is asking about the slope of line. From stmt1, you get m and that is the slope.
VP
VP
User avatar
Joined: 05 Jul 2008
Posts: 1435
Followers: 35

Kudos [?]: 225 [0], given: 1

Re: GMAT SET 16 - 5 [#permalink] New post 01 Oct 2008, 11:59
lylya4 wrote:
(1) insufficient

k is parallel to the line with equation y = (1-m)x + b + 1
=> m = 1 - m <=> m = 1/2, b is unknown

(2) sufficient (only 1 line intersects with another line at the particular point)

The answer is B


Didn't you just answer that m=1/2 as per (1)

I am not sure what you meant by (only 1 line intersects with another line at the particular point)

My answer is A
VP
VP
avatar
Joined: 17 Jun 2008
Posts: 1406
Followers: 7

Kudos [?]: 121 [0], given: 0

Re: GMAT SET 16 - 5 [#permalink] New post 01 Oct 2008, 22:00
nikhilpoddar wrote:
If Line k in the xy-plane has equation y = mx + b, where m and b are constants, what is
the slope of k?
(1) k is parallel to the line with equation y = (1-m)x + b +1.
(2) k intersects the line with equation y = 2x + 3 at the point (2, 7).


IMO A
clearly 1) helps to give m=1/2 slope of k
_________________

cheers
Its Now Or Never

Re: GMAT SET 16 - 5   [#permalink] 01 Oct 2008, 22:00
    Similar topics Author Replies Last post
Similar
Topics:
6 Experts publish their posts in the topic The equation of line k is y=mx+b, where m and b are constant TwoThrones 7 29 Apr 2014, 11:21
7 Experts publish their posts in the topic If Line k in the xy-plane has equation y = mx + b, where m TomB 7 26 Mar 2012, 12:56
1 Experts publish their posts in the topic If Line k in the xy-plane has equation y = mx + b, where m udaymathapati 2 02 Sep 2010, 11:52
If Line k in the xy-plane has equation y = mx + b, where m KocharRohit 7 17 Nov 2009, 19:53
Q34: If Line k in the xy-plane has equation y = mx + b, jet1445 1 08 Jul 2007, 20:14
Display posts from previous: Sort by

If Line k in the xy-plane has equation y = mx + b, where m

  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®.