It is currently 24 Mar 2019, 23:55

### 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

# For the line with equation y = ax + b,

Author Message
TAGS:
Intern
Joined: 22 Aug 2016
Posts: 32
Followers: 0

Kudos [?]: 9 [0], given: 5

For the line with equation y = ax + b, [#permalink]  24 Mar 2017, 14:52
00:00

Question Stats:

57% (01:47) correct 42% (01:14) wrong based on 28 sessions
For the line with equation y = ax + b, while ab is not equal to 0, the x-intercept is twice the y intercept.

 Quantity A Quantity B The slope of the line $$\frac{1}{2}$$

A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.

[Reveal] Spoiler: OA

Last edited by Carcass on 25 Mar 2017, 08:20, edited 1 time in total.
Edited the question
Intern
Joined: 23 Mar 2017
Posts: 9
Followers: 0

Kudos [?]: 13 [3] , given: 1

Re: For the line with equation y = ax + b, [#permalink]  24 Mar 2017, 18:17
3
KUDOS
HarveyKlaus wrote:
For the line with equation y = ax + b, while ab is not equal to 0,
the x-intercept is twice the y intercept.

1) The slope of the line
2) 1/2

Hi

The Slope Intercept equation is Y=MX+C

Now y=ax+b
y intercept =b(x=0)
x intercept =-b/a(y=0)

As per the original condition => -b/a=2b
Hence a=-1/2

So the equation of the line becomes => y=-x/2 + b
Thus the slope of the line is -1/2

Hence the OA should be B.

**My first attempt at any GRE question**
Moderator
Joined: 18 Apr 2015
Posts: 5898
Followers: 96

Kudos [?]: 1156 [0], given: 5481

Re: For the line with equation y = ax + b, [#permalink]  25 Mar 2017, 08:21
Expert's post
Please post the question in the right format. Thnk you for your collaboration.

Regards
_________________
Intern
Joined: 19 Oct 2017
Posts: 7
Followers: 0

Kudos [?]: 10 [1] , given: 0

Re: For the line with equation y = ax + b, [#permalink]  16 Feb 2018, 16:50
1
KUDOS
Just an observation, to increase the speed for such questions, we can quickly check since the y intercept is greater than x intercept, the slope has to be negative, hence B is the answer.
Intern
Joined: 05 Jan 2018
Posts: 32
Followers: 0

Kudos [?]: 16 [0], given: 8

Re: For the line with equation y = ax + b, [#permalink]  25 Jun 2018, 09:20
Ans..B
Director
Joined: 09 Nov 2018
Posts: 509
Followers: 0

Kudos [?]: 21 [0], given: 1

Re: For the line with equation y = ax + b, [#permalink]  19 Jan 2019, 06:22
How do we know slope is positive not negative here?
Director
Joined: 09 Nov 2018
Posts: 509
Followers: 0

Kudos [?]: 21 [0], given: 1

Re: For the line with equation y = ax + b, [#permalink]  19 Jan 2019, 06:30
Deeps wrote:
Just an observation, to increase the speed for such questions, we can quickly check since the y intercept is greater than x intercept, the slope has to be negative, hence B is the answer.

Director
Joined: 20 Apr 2016
Posts: 826
WE: Engineering (Energy and Utilities)
Followers: 11

Kudos [?]: 603 [1] , given: 124

Re: For the line with equation y = ax + b, [#permalink]  20 Jan 2019, 06:08
1
KUDOS
AE wrote:
Deeps wrote:
Just an observation, to increase the speed for such questions, we can quickly check since the y intercept is greater than x intercept, the slope has to be negative, hence B is the answer.

You can use this formula to find a slope in Intercept form =$$- \frac{{Y intercept}}{{X Intercept}}$$
_________________

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

Rules for Posting https://greprepclub.com/forum/rules-for ... -1083.html

Re: For the line with equation y = ax + b,   [#permalink] 20 Jan 2019, 06:08
Display posts from previous: Sort by