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

 It is currently 28 Apr 2015, 03:06

### 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

# If y = /x + 7/ + /2 - x/, is y = 9? (1)x < 2 (2) x >

 Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:
Manager
Joined: 20 Mar 2005
Posts: 170
Followers: 2

Kudos [?]: 23 [0], given: 0

If y = /x + 7/ + /2 - x/, is y = 9? (1)x < 2 (2) x > [#permalink]  06 Aug 2007, 21:50
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
If y = /x + 7/ + /2 - x/, is y = 9?
(1)x < 2
(2) x > -7
Senior Manager
Joined: 24 Nov 2006
Posts: 351
Followers: 1

Kudos [?]: 15 [0], given: 0

Re: DS absolute value [#permalink]  06 Aug 2007, 22:01
Balvinder wrote:
If y = /x + 7/ + /2 - x/, is y = 9?
(1)x < 2
(2) x > -7

y = |x+7| + |x-2|. This function has a graphic that is flat between its critical points (x=-7, x=2). We can notice that, putting together (1) n (2) yields -7<x<2, just the range described above. Therefore, C.
Intern
Joined: 06 Aug 2007
Posts: 8
Followers: 0

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

[#permalink]  06 Aug 2007, 22:34
y will always be 9 unless x is 2 or -7. if you plug in other values you always get 9. so you need both - because if x is ever 2 of 7 it won't be 9.
GMAT Club Legend
Joined: 07 Jul 2004
Posts: 5078
Location: Singapore
Followers: 22

Kudos [?]: 184 [0], given: 0

[#permalink]  07 Aug 2007, 01:26
St1:
If x = -3, then y = 9
If x = -10, then y = 15.
Insufficient.

St2:
If x = -6, then y = 9
If x = 10, then y = 25.
Insufficient.

Using St1 and St2:
-7 < x < 2. All values of x in this range will result in y = 9. Sufficient.

Ans C
[#permalink] 07 Aug 2007, 01:26
Similar topics Replies Last post
Similar
Topics:
Is x+y > 1 1) x < 8/9 2) y < 1/8 1 19 Sep 2011, 07:50
2 If x and y are positive, is y>2? 1) x>2y 2) x<y+2 4 13 Oct 2009, 21:42
if X>1 and Y>1 is X<y? 1)x^2/(xy+X)<1 1 27 Sep 2008, 11:37
If x > 1 and y > 1, is X < Y 1) x^2/(xy + x) < 1 6 31 Jul 2008, 15:36
If X>1 and Y>1, is X<Y? (1) X?/(XY+X)<1 (2) 8 21 Mar 2006, 10:09
Display posts from previous: Sort by

# If y = /x + 7/ + /2 - x/, is y = 9? (1)x < 2 (2) x >

 Question banks Downloads My Bookmarks Reviews Important topics

 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®.