It is currently 20 Feb 2018, 13:45

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.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

In the XY-coordinate plane like L and like K intersect at

  post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Intern
Intern
avatar
Joined: 08 Oct 2007
Posts: 33
In the XY-coordinate plane like L and like K intersect at [#permalink]

Show Tags

New post 30 Nov 2008, 07:16
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

In the XY-coordinate plane like L and like K intersect at the point (4;3). Is the product of their slopes negative?

1) The product of the X-intercepts of lines L and K is positive
2) The product of the y-intercepts of lines L and K is negatvie.
Manager
Manager
avatar
Joined: 18 Nov 2008
Posts: 115
Re: DS xy plane [#permalink]

Show Tags

New post 30 Nov 2008, 07:49
Quote:
In the XY-coordinate plane like L and like K intersect at the point (4;3). Is the product of their slopes negative?

1) The product of the X-intercepts of lines L and K is positive
2) The product of the y-intercepts of lines L and K is negatvie.


1) no info about y-intercepts, Insuff.
2) no info about x-intercepts, Insuff.

Combined, and given that L and K intersect ar the (4;3), we conclude that two lines intersect in the I quadrant and thus x-intercepts of the lines must be both positive to make the product positive as given in 1). If they were both negative, one line would have gone through II and IV quadrant. Consequently, given in 2) that product of y-intercepts is negative it becomes clear that these two lines have different slopes, product of which is negative.

C
Re: DS xy plane   [#permalink] 30 Nov 2008, 07:49
Display posts from previous: Sort by

In the XY-coordinate plane like L and like K intersect at

  post reply Question banks Downloads My Bookmarks Reviews Important topics  


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

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

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®.