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

It is currently 21 Sep 2014, 04:27

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

Y=a(x-b)^2+P. Can you tell if y has intersects with x axis?

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 04 Sep 2006
Posts: 117
Followers: 2

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

Y=a(x-b)^2+P. Can you tell if y has intersects with x axis? [#permalink] New post 31 May 2009, 09:54
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Y=a(x-b)^2+P. Can you tell if y has intersects with x axis?
1). a<0
2). P>0

explain the method pls
Intern
Intern
avatar
Joined: 17 May 2009
Posts: 10
Location: USA
Schools: Kellogs, Wharton, Chicago
Followers: 0

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

Re: intersection [#permalink] New post 31 May 2009, 10:32
at x = b, y= P

If P < 0 then a should be greater than 0 to increase y and cut x-axis.

If P > 0 then a should be less than 0 to decrease y and cut x-axis.

so if both a < 0 and P > 0 Y will decrease and eventually meet x- axis.

Also,

y = 0 ==> x = (-p/a)^0.5 +b

x will have real values only when p/a <0 ==> either [P < 0 and a >0 ]or [P > 0 and a < 0]

IMO ans C.
Senior Manager
Senior Manager
User avatar
Joined: 16 Jan 2009
Posts: 362
Concentration: Technology, Marketing
GMAT 1: 700 Q50 V34
GPA: 3
WE: Sales (Telecommunications)
Followers: 2

Kudos [?]: 68 [0], given: 16

GMAT Tests User
Re: intersection [#permalink] New post 31 May 2009, 14:01
traveller10 wrote:

y = 0 ==> x = (-p/a)^0.5 +b

x will have real values only when p/a <0 ==> either [P < 0 and a >0 ]or [P > 0 and a < 0]

IMO ans C.


Nice one.
IMO C

OA and source please.
_________________

Lahoosaher

Re: intersection   [#permalink] 31 May 2009, 14:01
    Similar topics Author Replies Last post
Similar
Topics:
3 Experts publish their posts in the topic Does line y = mx + c intersect X axis? jellybean23 4 26 Sep 2013, 22:58
Experts publish their posts in the topic Line intersection x-axis udaymathapati 3 03 May 2011, 05:50
If y=kx+b intersects x axis at (2,0) and y axis at (0,5) dfotlm 5 17 Jul 2007, 13:33
Y=a(x-b)^2+P Does Y intersect X axis? 1) a<0 2) P>0 getzgetzu 1 21 Apr 2006, 02:52
Y=a(x-b)^2+P. Can you tell if y has intersects with x axis? laxieqv 3 25 Feb 2006, 21:02
Display posts from previous: Sort by

Y=a(x-b)^2+P. Can you tell if y has intersects with x axis?

  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®.