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

 It is currently 17 Oct 2019, 16:39

### 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

# In the equation mx + 5 = y, m is a constant. If x = 2 when y = 1, when

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 58402
In the equation mx + 5 = y, m is a constant. If x = 2 when y = 1, when  [#permalink]

### Show Tags

14 Jan 2019, 03:10
00:00

Difficulty:

15% (low)

Question Stats:

89% (01:15) correct 11% (01:22) wrong based on 32 sessions

### HideShow timer Statistics

In the equation mx + 5 = y, m is a constant. If x = 2 when y = 1, when is the value of x when y = –1?

A. −1
B. 0
C. 1
D. 2
E. 3

_________________
Senior Manager
Joined: 13 Jan 2018
Posts: 342
Location: India
Concentration: Operations, General Management
GMAT 1: 580 Q47 V23
GMAT 2: 640 Q49 V27
GPA: 4
WE: Consulting (Consulting)
Re: In the equation mx + 5 = y, m is a constant. If x = 2 when y = 1, when  [#permalink]

### Show Tags

14 Jan 2019, 03:28
y = mx + 5

If x = 2 and y = 1,

1 = 2m + 5
-4 = 2m
m = -2

If y = -1, then x =

-1 = -2(x) + 5
2x = 6
x = 3

OPTION: E
_________________
____________________________
Regards,

Chaitanya

+1 Kudos

if you like my explanation!!!
GMAT Club Legend
Joined: 18 Aug 2017
Posts: 5014
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
Re: In the equation mx + 5 = y, m is a constant. If x = 2 when y = 1, when  [#permalink]

### Show Tags

14 Jan 2019, 04:25
Bunuel wrote:
In the equation mx + 5 = y, m is a constant. If x = 2 when y = 1, when is the value of x when y = –1?

A. −1
B. 0
C. 1
D. 2
E. 3

y=mx+5
1=2m+5
m=-2
-1=-2x+5
x=3
IMO E
Re: In the equation mx + 5 = y, m is a constant. If x = 2 when y = 1, when   [#permalink] 14 Jan 2019, 04:25
Display posts from previous: Sort by