It is currently 14 Dec 2018, 03:07
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.

Line A is perpendicular to the line with the equation

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Moderator
Moderator
User avatar
Joined: 18 Apr 2015
Posts: 5166
Followers: 77

Kudos [?]: 1033 [0], given: 4655

CAT Tests
Line A is perpendicular to the line with the equation [#permalink] New post 17 May 2018, 09:40
Expert's post
00:00

Question Stats:

77% (00:46) correct 22% (01:06) wrong based on 9 sessions
Line A is perpendicular to the line with the equation \(y= - \frac{1}{5}x\) and the point (3, -10) is on line A. Which of the following is the equation of line A?

A. \(y=- \frac{1}{5} x - \frac{47}{5}\)

B. \(y = \frac{1}{5} x -\frac{53}{5}\)

C. \(y = 5x\)

D. \(y=5x - 5\)

E. \(y=5x - 25\)
[Reveal] Spoiler: OA

_________________

Get the 2 FREE GREPrepclub Tests

Director
Director
Joined: 20 Apr 2016
Posts: 758
Followers: 6

Kudos [?]: 514 [0], given: 94

CAT Tests
Re: Line A is perpendicular to the line with the equation [#permalink] New post 03 Aug 2018, 21:25
Carcass wrote:
Line A is perpendicular to the line with the equation \(y= - \frac{1}{5}x\) and the point (3, -10) is on line A. Which of the following is the equation of line A?

A. \(y=- \frac{1}{5} x - \frac{47}{5}\)

B. \(y = \frac{1}{5} x -\frac{53}{5}\)

C. \(y = 5x\)

D. \(y=5x - 5\)

E. \(y=5x - 25\)


since line A is perpendicular to the line \(y= - \frac{1}{5}x\),

so slope for line A = 5 (Since the slope of a line perpendicular to a given line is the negative inverse of the slope of the other line)

Now two points of the line a are given as (3 , -10)

Putting them in the line equation

y = mx + c

or -10 = 5 * 3 + c

or c = -25

therefore the equation of line A : y = 5x - 25
_________________

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

Re: Line A is perpendicular to the line with the equation   [#permalink] 03 Aug 2018, 21:25
Display posts from previous: Sort by

Line A is perpendicular to the line with the equation

  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®.