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

It is currently 30 Sep 2014, 10:18

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 and b

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
User avatar
Joined: 25 Dec 2003
Posts: 360
Location: India
Followers: 1

Kudos [?]: 14 [0], given: 0

If Line K in the xy-plane has equation y=mx+b, where m and b [#permalink] New post 20 May 2004, 23:55
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)

this is a DS question

Regards
_________________

Giving another SHOT

Senior Manager
Senior Manager
avatar
Joined: 02 Feb 2004
Posts: 345
Followers: 1

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

Re: question 5 [#permalink] New post 21 May 2004, 05:28
carsen 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)

this is a DS question

Regards

A.

slopes are identical when lines are parallel. in this case slope is (1-m)
Manager
Manager
avatar
Joined: 10 Mar 2004
Posts: 66
Location: Dallas,TX
Followers: 1

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

Re: question 5 [#permalink] New post 21 May 2004, 06:01
carsen 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)

this is a DS question

Regards


I think it can be solved only by 1
Manager
Manager
avatar
Joined: 30 Apr 2004
Posts: 50
Location: NYC
Followers: 1

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

 [#permalink] New post 21 May 2004, 13:47
The answer is A

By definition, parallel lines have the same slope, no matter what the intercept is. So your only looking at the "m" part of the y=mx+b.

Therefore, according to statement (1), y=(1-m)x+b+1 has the same slope as y=mx+b. Which means that 1-m = m...m=1/2

Statement 2 gives you no information about the slope except that it is not equal to 2.
SVP
SVP
User avatar
Joined: 30 Oct 2003
Posts: 1798
Location: NewJersey USA
Followers: 4

Kudos [?]: 35 [0], given: 0

 [#permalink] New post 21 May 2004, 13:56
I think the question is asking us to determine the value of m
not whether slope is 1-m

In that case the answer is E.
Manager
Manager
avatar
Joined: 15 Mar 2004
Posts: 63
Location: Ithaca, NY
Followers: 1

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

 [#permalink] New post 21 May 2004, 17:18
Agree... I took the question to mean that they want the numerical value of the slope. I choose E.
Senior Manager
Senior Manager
avatar
Joined: 02 Mar 2004
Posts: 330
Location: There
Followers: 1

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

 [#permalink] New post 21 May 2004, 17:25
It is A.

1. Parallel lines have same slope, or inclination to any reference line.
m = 1-m, or m = (1/2) = the slope of K
2. it says K and y = 2x+3 are not parellel. Hence, the angle b/w these two lines is any but 0, 180, and 360 degrees. Insufficient.
Senior Manager
Senior Manager
User avatar
Joined: 25 Dec 2003
Posts: 360
Location: India
Followers: 1

Kudos [?]: 14 [0], given: 0

 [#permalink] New post 21 May 2004, 20:39
Thanks for all the replies guys

The official answer is A.

I need to study more about these slopes. Which book would give some insights, shortcuts, tips on such slope questions ... Kaplan, OG or anyother? I have no idea on questions like slope and unable to understand the above explainations.

Regards
_________________

Giving another SHOT

Manager
Manager
avatar
Joined: 30 Apr 2004
Posts: 50
Location: NYC
Followers: 1

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

 [#permalink] New post 21 May 2004, 22:27
anandnk wrote:
I think the question is asking us to determine the value of m
not whether slope is 1-m

In that case the answer is E.


In my post above you will see that stataement (1) shows that m-1 = m.

1-m=m
1 = 2m
m = 1/2
  [#permalink] 21 May 2004, 22:27
    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
6 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
2 If Line k in the xy-plane has equation y = mx + b, where m nikhilpoddar 6 01 Oct 2008, 00:51
Display posts from previous: Sort by

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

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

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®.