GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 16 Nov 2018, 18:38

### 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 November
PrevNext
SuMoTuWeThFrSa
28293031123
45678910
11121314151617
18192021222324
2526272829301
Open Detailed Calendar
• ### Free GMAT Strategy Webinar

November 17, 2018

November 17, 2018

07:00 AM PST

09:00 AM PST

Nov. 17, 7 AM PST. Aiming to score 760+? Attend this FREE session to learn how to Define your GMAT Strategy, Create your Study Plan and Master the Core Skills to excel on the GMAT.
• ### GMATbuster's Weekly GMAT Quant Quiz # 9

November 17, 2018

November 17, 2018

09:00 AM PST

11:00 AM PST

Join the Quiz Saturday November 17th, 9 AM PST. The Quiz will last approximately 2 hours. Make sure you are on time or you will be at a disadvantage.

# In the xy­plane, is the slope of the line segment QR positive?

Author Message
TAGS:

### Hide Tags

Manager
Joined: 07 Jun 2017
Posts: 174
Location: India
Concentration: Technology, General Management
GMAT 1: 660 Q46 V38
GPA: 3.6
WE: Information Technology (Computer Software)
In the xy­plane, is the slope of the line segment QR positive?  [#permalink]

### Show Tags

26 Oct 2017, 21:30
2
00:00

Difficulty:

45% (medium)

Question Stats:

62% (01:22) correct 38% (01:13) wrong based on 97 sessions

### HideShow timer Statistics

In the xy ­plane, is the slope of the line segment QR positive?

(1) The slope of line segment PQ is -­1.
(2) Angle PQR is 30 degrees.

_________________

Regards,
Naveen
email: nkmungila@gmail.com
Please press kudos if you like this post

Senior Manager
Joined: 17 Oct 2016
Posts: 321
Location: India
Concentration: Operations, Strategy
GPA: 3.73
WE: Design (Real Estate)
Re: In the xy­plane, is the slope of the line segment QR positive?  [#permalink]

### Show Tags

26 Oct 2017, 21:36
Option C

St1 says no info about R. Insufficient
St2 says no info about Q. Insufficient

Combining we get that the slope will be a negative value. Hence C

Posted from my mobile device
_________________

Help with kudos if u found the post useful. Thanks

Intern
Joined: 24 Aug 2017
Posts: 8
Re: In the xy­plane, is the slope of the line segment QR positive?  [#permalink]

### Show Tags

13 Nov 2017, 16:41
I dont get it at all not even the question. Please explain!!!

Posted from my mobile device
Senior Manager
Joined: 31 Jul 2017
Posts: 490
Location: Malaysia
GMAT 1: 700 Q50 V33
GPA: 3.95
WE: Consulting (Energy and Utilities)
Re: In the xy­plane, is the slope of the line segment QR positive?  [#permalink]

### Show Tags

13 Nov 2017, 17:36
1
Tan30 = m1-m2/1+m1.m2
We know m1, so by combining above two statements we can know m2

Sent from my Lenovo P1a42 using GMAT Club Forum mobile app
_________________

If my Post helps you in Gaining Knowledge, Help me with KUDOS.. !!

Current Student
Joined: 17 Jun 2016
Posts: 508
Location: India
GMAT 1: 720 Q49 V39
GMAT 2: 710 Q50 V37
GPA: 3.65
WE: Engineering (Energy and Utilities)
Re: In the xy­plane, is the slope of the line segment QR positive?  [#permalink]

### Show Tags

13 Nov 2017, 21:52
1
najsh2 wrote:
I dont get it at all not even the question. Please explain!!!

Posted from my mobile device

So the questions is whether the slope of line segment QR is positive?
i.e, whether the line segment QR is going in an upward direction while moving from left to right?

Statement 1: talks about some other line PQ.
So, we are missing point R of the line segment QR in this statement. Hence INSUFFICIENT

Statement 2: talks about the angle PQR. (which is 30 Deg)
So, we now know the relative angle between lines PQ and PR but unless we know the reference point we cannot be sure whether QR has a positive slop.
Again, INSUFFICIENT.

From 1 and 2,
We know slope of PQ = -1
Meaning if you consider one of the point (P or Q) at Origin (0,0) the other point (Q or P) would be in either second or fourth quadrant of a rectangular coordinate system.
So, if we add statement-2 in this and from point Q if we were make a 30 Deg angle to draw QR line, point R would again be in 2nd or 4th quadrant and line segment QR would have a negative slope.

So, Both statements are required to answer the question.

Hence Option C
_________________
Intern
Joined: 16 Dec 2017
Posts: 5
Re: In the xy­plane, is the slope of the line segment QR positive?  [#permalink]

### Show Tags

25 Apr 2018, 02:36
Can someone explain the answer to the question with a different approach?
Re: In the xy­plane, is the slope of the line segment QR positive? &nbs [#permalink] 25 Apr 2018, 02:36
Display posts from previous: Sort by