It is currently 12 Dec 2018, 10:22
My Tests

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.

Which of the following is an equation of a line that doe NO

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Moderator
Moderator
User avatar
Joined: 18 Apr 2015
Posts: 5150
Followers: 77

Kudos [?]: 1031 [0], given: 4640

CAT Tests
Which of the following is an equation of a line that doe NO [#permalink] New post 05 Dec 2017, 14:47
Expert's post
00:00

Question Stats:

91% (00:21) correct 8% (01:09) wrong based on 12 sessions
Which of the following is an equation of a line that doe NOT contain any points in the xy-plane for which both coordinates are integers?

A.\(y=4\)

B. \(y=\frac{1}{2x}\)

C.\(y=x+3\)

D. \(y= x+\frac{1}{2}\)

E. \(y=\frac{1}{2x} + 3\)
[Reveal] Spoiler: OA

_________________

Get the 2 FREE GREPrepclub Tests


Last edited by chetan2u on 03 Dec 2018, 18:57, edited 1 time in total.
Corrected the OA
1 KUDOS received
Director
Director
Joined: 20 Apr 2016
Posts: 758
Followers: 6

Kudos [?]: 512 [1] , given: 94

CAT Tests
Re: Which of the following is an equation of a line that doe NO [#permalink] New post 06 Dec 2017, 07:57
1
This post received
KUDOS
Carcass wrote:
Which of the following is an equation of a line that doe NOT contain any points in the xy-plane for which both coordinates are integers?

A.\(y=4\)

B. \(y=\frac{1}{2x}\)

C.\(y=x+3\)

D. \(y= x+\frac{1}{2}\)

E. \(y=\frac{1}{2x} + 3\)

[Reveal] Spoiler: OA
OA in 24h


Here looking at the values,

Only option D , which is \(y= x+\frac{1}{2}\) is not possible because for any integer value of x, y will be fraction
_________________

If you found this post useful, please let me know by pressing the Kudos Button

1 KUDOS received
Intern
Intern
Joined: 27 Oct 2018
Posts: 49
Followers: 0

Kudos [?]: 12 [1] , given: 27

Re: Which of the following is an equation of a line that doe NO [#permalink] New post 02 Nov 2018, 11:32
1
This post received
KUDOS
How is option E not right? :oops:
Intern
Intern
Joined: 15 Sep 2018
Posts: 23
Followers: 0

Kudos [?]: 6 [0], given: 2

Re: Which of the following is an equation of a line that doe NO [#permalink] New post 03 Dec 2018, 13:14
indiragre18 wrote:
How is option E not right? :oops:


I would also like to know because I did this with 0 and I remembered you can't divide by 0
Supreme Moderator
Joined: 01 Nov 2017
Posts: 201
Followers: 3

Kudos [?]: 63 [0], given: 1

CAT Tests
Re: Which of the following is an equation of a line that doe NO [#permalink] New post 03 Dec 2018, 18:56
Expert's post
Carcass wrote:
Which of the following is an equation of a line that doe NOT contain any points in the xy-plane for which both coordinates are integers?

A.\(y=4\)

B. \(y=\frac{1}{2x}\)

C.\(y=x+3\)

D. \(y= x+\frac{1}{2}\)

E. \(y=\frac{1}{2x} + 3\)



The question or OA is flawed..
A.\(y=4\).... x could be any integer...both integer possible

B. \(y=\frac{1}{2x}\).......2xy=1 or xy=\(\frac{1}{2}\)..
If both x and y are integers, xy should be an integer... so both x and y cannot be integers

C.\(y=x+3\)... Possiible

D. \(y= x+\frac{1}{2}\).......\(y- x=\frac{1}{2}\)..
The difference of two integers cannot be a fraction... so both x and y cannot be integers

E. \(y=\frac{1}{2x} + 3....y-3=\frac{1}{2x}\)........If x is an integer, \(\frac{1}{2x}\) will be a fraction, then y-3 cannot be a fraction

so answer = B, D, and E

Note - editing the answer accordingly
_________________

Some useful Theory.
1. Arithmetic and Geometric progressions : https://greprepclub.com/forum/progressions-arithmetic-geometric-and-harmonic-11574.html#p27048
2. Effect of Arithmetic Operations on fraction : https://greprepclub.com/forum/effects-of-arithmetic-operations-on-fractions-11573.html?sid=d570445335a783891cd4d48a17db9825
3. Remainders : https://greprepclub.com/forum/remainders-what-you-should-know-11524.html
4. Number properties : https://greprepclub.com/forum/number-property-all-you-require-11518.html
5. Absolute Modulus and Inequalities : https://greprepclub.com/forum/absolute-modulus-a-better-understanding-11281.html

Re: Which of the following is an equation of a line that doe NO   [#permalink] 03 Dec 2018, 18:56
Display posts from previous: Sort by

Which of the following is an equation of a line that doe NO

  Question banks Downloads My Bookmarks Reviews Important topics  


GRE Prep Club Forum Home| About| Terms and Conditions and Privacy Policy| GRE Prep Club Rules| Contact

Powered by phpBB © phpBB Group

Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.