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

It is currently 10 Jul 2014, 07:25

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

Slope of two point

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Intern
Intern
avatar
Joined: 10 Aug 2009
Posts: 47
Location: United States (AL)
Concentration: Entrepreneurship, Strategy
GMAT 1: 600 Q43 V30
GPA: 2.4
WE: Business Development (Other)
Followers: 0

Kudos [?]: 9 [0], given: 5

Reviews Badge
Slope of two point [#permalink] New post 14 Mar 2011, 18:05
Quick question, I am midway through the MGMAT geometry book and wanted to know about the slope of two points

MGMAT gives the slope of two points as Y1-Y2/X1-X2 but I always seem to remember it as Y2-Y1/X2-X1 are there any instances where using one or the other would make that much of a difference?
_________________

"Popular opinion is the greatest lie in the world"-Thomas Carlyle

Manhattan GMAT Discount CodesKaplan GMAT Prep Discount CodesVeritas Prep GMAT Discount Codes
1 KUDOS received
Director
Director
avatar
Status: -=GMAT Jedi=-
Joined: 04 Jan 2011
Posts: 741
Location: Kochi, India
Schools: ISB
WE 1: Engineer - Larsen & Toubro, ECC Division
WE 2: Faculty - T.I.M.E.
Followers: 32

Kudos [?]: 121 [1] , given: 66

GMAT Tests User
Re: Slope of two point [#permalink] New post 14 Mar 2011, 18:29
1
This post received
KUDOS
They're both the same!

(y1 - y2)/(x1 - x2) = -(y2 - y1)/-(x2 - x1)

The negative gets cancelled from the numberator and denominator in the RHS (right hand side) of the above equation.

Therefore,

(y1 - y2)/(x1 - x2) = (y2 - y1)/(x2 - x1)

CAUTION:

Do not MIX the order in the numberator and denominator e.g.

(y1 - y2)
_________

(x2 - x1)

IS WRONG :)
_________________

Mission: Be a force of good and make a positive difference to every life I touch!

From 650 to 710 to 750 - My Tryst With GMAT [Experience Thread]

Intern
Intern
avatar
Joined: 10 Aug 2009
Posts: 47
Location: United States (AL)
Concentration: Entrepreneurship, Strategy
GMAT 1: 600 Q43 V30
GPA: 2.4
WE: Business Development (Other)
Followers: 0

Kudos [?]: 9 [0], given: 5

Reviews Badge
Re: Slope of two point [#permalink] New post 14 Mar 2011, 18:31
Entwistle wrote:
They're both the same!

(y1 - y2)/(x1 - x2) = -(y2 - y1)/-(x2 - x1)

The negative gets cancelled from the numberator and denominator in the RHS (right hand side) of the above equation.

Therefore,

(y1 - y2)/(x1 - x2) = (y2 - y1)/(x2 - x1)

CAUTION:

Do not MIX the order in the numberator and denominator e.g.

(y1 - y2)
_________

(x2 - x1)

IS WRONG :)


Thanks I was thinking that, I just wanted to make sure if there was some instance where it did make a difference I couldn't think up. :)
_________________

"Popular opinion is the greatest lie in the world"-Thomas Carlyle


Last edited by Bigred2008 on 14 Mar 2011, 18:45, edited 1 time in total.
Director
Director
avatar
Status: -=GMAT Jedi=-
Joined: 04 Jan 2011
Posts: 741
Location: Kochi, India
Schools: ISB
WE 1: Engineer - Larsen & Toubro, ECC Division
WE 2: Faculty - T.I.M.E.
Followers: 32

Kudos [?]: 121 [0], given: 66

GMAT Tests User
Re: Slope of two point [#permalink] New post 14 Mar 2011, 18:32
*numerator

:|

Makes me look dyslexic :P
_________________

Mission: Be a force of good and make a positive difference to every life I touch!

From 650 to 710 to 750 - My Tryst With GMAT [Experience Thread]

Current Student
avatar
Joined: 17 Mar 2011
Posts: 453
Location: United States (DC)
Concentration: General Management, Technology
GMAT 1: 760 Q49 V45
GPA: 3.37
WE: Information Technology (Consulting)
Followers: 10

Kudos [?]: 150 [0], given: 5

GMAT Tests User
Re: Slope of two point [#permalink] New post 21 Mar 2011, 05:39
As long as you're consistent in your application, it doesn't matter if you use (y1-y2)/(x1-x2) or (y2-y1)/(x2-x1)

What you need to be careful of is recognizing that (y1-y2)/(x2-x1) is incorrect.
Re: Slope of two point   [#permalink] 21 Mar 2011, 05:39
    Similar topics Author Replies Last post
Similar
Topics:
If two lines have slopes a and b , respectively, are they nverma 3 15 May 2010, 10:41
slope vcbabu 4 31 May 2009, 09:10
There are two lines with slopes m and n. Are they hedggie 2 31 Mar 2008, 13:36
Slope usman7 9 14 Dec 2006, 02:38
Slope mirhaque 4 08 Jul 2005, 06:43
Display posts from previous: Sort by

Slope of two point

  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®.