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

 It is currently 27 Apr 2015, 14:42

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Line n and p lie in the xy plane. Is the slope of line n

Author Message
TAGS:
Manager
Joined: 19 Sep 2005
Posts: 110
Followers: 1

Kudos [?]: 3 [0], given: 0

Line n and p lie in the xy plane. Is the slope of line n [#permalink]  09 Dec 2005, 20:15
Line n and p lie in the xy plane. Is the slope of line n less than the slope of line p?

1. lines n and p intersect at the point (5,1)

2. the y-intercept of line n is greater than the y-intercept of line p.
Director
Joined: 14 Sep 2005
Posts: 994
Location: South Korea
Followers: 2

Kudos [?]: 42 [0], given: 0

I'm not quite sure about the definition of a slope...
A slope should be an absolute value, right?
If so, I think it is (E).
_________________

Auge um Auge, Zahn um Zahn !

Director
Joined: 14 Sep 2005
Posts: 994
Location: South Korea
Followers: 2

Kudos [?]: 42 [0], given: 0

laxieqv wrote:
gamjatang wrote:
I'm not quite sure about the definition of a slope...
A slope should be an absolute value, right?
If so, I think it is (E).

a slope can be + or -

Thanks, Laxie.

Candy candy~

_________________

Auge um Auge, Zahn um Zahn !

SVP
Joined: 28 May 2005
Posts: 1743
Location: Dhaka
Followers: 6

Kudos [?]: 71 [0], given: 0

if the slopes are -ve only then we can answer the question combining 1 and 2

but we don't know whether the slope is positive or negative.

_________________

hey ya......

SVP
Joined: 24 Sep 2005
Posts: 1893
Followers: 11

Kudos [?]: 139 [0], given: 0

Re: Intrsecting lines [#permalink]  10 Dec 2005, 06:50
Jennif102 wrote:
Line n and p lie in the xy plane. Is the slope of line n less than the slope of line p?

1. lines n and p intersect at the point (5,1)

2. the y-intercept of line n is greater than the y-intercept of line p.

1 . This stmt is clearly insuff coz the two lines can rotate freely around the point (5,1) --->insuff

2. see my illustration.

1 and 2
Let ( 0, y1) be the y-intersect of n, (0, y2) be of p
we have:
the slope of n= (y1-1)/ (0-5) = (y1-1)/-5
similarly, the slope of line p= (y2-1)/-5

we have y1> y2 ----> y1 -1> y2 -1 ----> (y1 -1 )/ -5 < (y2 -1 ) / -5
----> answer to the question: yes
---->suff

C it is.
Attachments

np.doc [25.5 KiB]

Re: Intrsecting lines   [#permalink] 10 Dec 2005, 06:50
Similar topics Replies Last post
Similar
Topics:
line n and p lie in the xy plane, is the slope of line n 8 06 Jan 2008, 08:13
1 Lines n and p lie in the xy-plane. Is the slope of line n 9 11 Nov 2006, 12:28
Lines n and p lie in the xy-plane. Is the slope of line n 2 25 Sep 2006, 21:37
lines n and p lie in the xy-plane. is the slope of line n 4 24 Aug 2006, 14:31
Lines n and p lie in the xy-plane. Is the slope of line n 17 07 May 2006, 17:24
Display posts from previous: Sort by