Last visit was: 16 Jun 2024, 23:33 It is currently 16 Jun 2024, 23:33
Toolkit
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
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

# Which of the following points is the intersection between the lines y

SORT BY:
Tags:
Show Tags
Hide Tags
GRE Forum Moderator
Joined: 02 Nov 2016
Posts: 13999
Own Kudos [?]: 35096 [11]
Given Kudos: 5818
GPA: 3.62
CEO
Joined: 26 Feb 2016
Posts: 2870
Own Kudos [?]: 5263 [1]
Given Kudos: 47
Location: India
GPA: 3.12
SVP
Joined: 06 Nov 2014
Posts: 1796
Own Kudos [?]: 1376 [2]
Given Kudos: 23
GMAT Club Legend
Joined: 12 Sep 2015
Posts: 6814
Own Kudos [?]: 30567 [1]
Given Kudos: 799
Re: Which of the following points is the intersection between the lines y [#permalink]
1
Kudos
Top Contributor
Which of the following points is the intersection between the lines y = 3x + 6 and y = −2x − 4 ?

A. (2,0)
B. (0,−2)
C. (−2,0)
D. (0,2)
E. (1,5)

The above approaches are all correct/valid, but I'll point out that, once we determine that x = -2, we need not actually calculate the y-value, since only one answer choice has an x-coordinate of -2

RELATED VIDEO
GMAT Club Legend
Joined: 19 Dec 2014
Status:GMAT Assassin/Co-Founder
Affiliations: EMPOWERgmat
Posts: 21843
Own Kudos [?]: 11723 [1]
Given Kudos: 450
Location: United States (CA)
GMAT 1: 800 Q51 V49
GRE 1: Q170 V170
Re: Which of the following points is the intersection between the lines y [#permalink]
1
Kudos
Hi All,

We're asked which of the following points is the intersection between the lines y = 3x + 6 and y = -2x - 4. This question can be solved in a number of different ways. Sometimes, the fastest way to answer a question is to use 'brute force'; the five answers are co-ordinates and we know that one of them will 'fit' both equations, so we just have to do enough work to prove which one fits (and that one will be the correct answer).

Answer A. (2, 0) --> fits the first equation, does NOT fit the second equation
Answer B. (0, -2) -->does NOT fit either equation
Answer C. (-2,0) --> fits BOTH equations