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

It is currently 16 Apr 2014, 11:59

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

Does the point of intersection of line y=Kx+ B and line

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
CEO
CEO
User avatar
Joined: 21 Jan 2007
Posts: 2775
Location: New York City
Followers: 6

Kudos [?]: 170 [0], given: 4

GMAT Tests User
Does the point of intersection of line y=Kx+ B and line [#permalink] New post 13 Nov 2007, 06:04
Does the point of intersection of line y=Kx+ B and line x=Kx+B have a negative coordinate?

1. k > 0, b>0
2. k > 1


Please walk me thru the answer. thanks
Manager
Manager
Joined: 01 Nov 2007
Posts: 69
Followers: 1

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

 [#permalink] New post 14 Nov 2007, 10:06
since the slope of the lines is same dont you think the lines will be parallal.

and does the question asks that both the x,y cordinate will be negative or any one of them.?
VP
VP
User avatar
Joined: 09 Jul 2007
Posts: 1111
Location: London
Followers: 6

Kudos [?]: 63 [0], given: 0

GMAT Tests User
Re: intersecting lines [#permalink] New post 14 Nov 2007, 10:42
bmwhype2 wrote:
Does the point of intersection of line y=Kx+ B and line x=Kx+B have a negative coordinate?

1. k > 0, b>0
2. k > 1


Please walk me thru the answer. thanks


I think the answer is C. i remember doing it. if it is the right answer i might post the explanation
Director
Director
User avatar
Joined: 13 Dec 2006
Posts: 521
Location: Indonesia
Followers: 4

Kudos [?]: 83 [0], given: 0

GMAT Tests User
 [#permalink] New post 14 Nov 2007, 16:50
Is there any typo error?

I think the second equation should be X= KY + B...

if so then 1 is sufficent, hence answer is A

On solving both the equation we will have X = -B((K^2 + 1)/(K^2 - 1))

and Y = B[1- (K^2 +1)/(K^2-1)], since both K and B are greater than 0, X and Y will be negative coordinate. If K=1, K^2 - 1 = 0 and hence X will have infinite negative value. So Case 2 can be ignored.

Amar
Intern
Intern
Joined: 14 Nov 2007
Posts: 10
Followers: 0

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

Re: intersecting lines [#permalink] New post 15 Nov 2007, 04:44
bmwhype2 wrote:
bmwhype2 wrote:
Does the point of intersection of line y=Kx+ B and line x=KY+B have a negative coordinate?

1. k > 0, b>0
2. k > 1


Please walk me thru the answer. thanks


sorry.


Actually, if there is no error and the 2nd graph is vertical line, then the answer is C.

Let's see :

Functions are : y = kx+b, x = b/(1-k)

1 is not sufficient because if b and k both positive then :

y = kx + b passes I, III, IV quadrants.
x = b/(1-k) when k <1>1 then it is vertical to the left of Y and the intersection will be in either quadrant III or IV and 1 or 2 coordinates will be negative.

2 is not sufficient because it gives us obviousely not enough information.

Thus the unswer is C
Re: intersecting lines   [#permalink] 15 Nov 2007, 04:44
    Similar topics Author Replies Last post
Similar
Topics:
New posts Does the point of intersection of line y = k*x + b and line GK_Gmat 2 22 Oct 2007, 22:06
New posts Experts publish their posts in the topic At what angle do line y=Kx + B and line y=Bx+K intersect? 1. bmwhype2 4 19 Nov 2007, 07:32
New posts Does the point of intersection of line y = kx + b and line x marcodonzelli 4 15 Mar 2008, 10:52
New posts In the xy-palne, which of the following about line y=kx+b arjtryarjtry 2 22 Jul 2008, 00:05
New posts Experts publish their posts in the topic At what angle do lines y = Kx + B and y = Bx + K intersect ? study 6 29 Dec 2009, 20:28
Display posts from previous: Sort by

Does the point of intersection of line y=Kx+ B and line

  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®.