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# In the coordinate plane, the line L has slope 2 and y intercept 4.

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Manager
Joined: 07 Jun 2017
Posts: 174
Location: India
Concentration: Technology, General Management
GMAT 1: 660 Q46 V38
GPA: 3.6
WE: Information Technology (Computer Software)
In the coordinate plane, the line L has slope 2 and y intercept 4. [#permalink]

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24 Oct 2017, 00:58
1
00:00

Difficulty:

15% (low)

Question Stats:

72% (01:10) correct 28% (01:28) wrong based on 47 sessions

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In the coordinate plane, the line L has slope 2 and y intercept 4. If points (1, y) and (x, 2) lie on the line, what is the value of x­-y ?

A. ­-8
­B. -7
­C. -6
­D. -5
­E. -4

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Naveen
email: nkmungila@gmail.com
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Manager
Joined: 14 Oct 2015
Posts: 245
GPA: 3.57
Re: In the coordinate plane, the line L has slope 2 and y intercept 4. [#permalink]

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24 Oct 2017, 01:51
1
nkmungila wrote:
In the coordinate plane, the line L has slope 2 and y intercept 4. If points (1, y) and (x, 2) lie on the line, what is the value of x­-y ?

A. ­-8
­B. -7
­C. -6
­D. -5
­E. -4

It should be B

$$y = mx + c$$

Using point $$(1,y)$$

$$y = 2*1 + 4 = 6$$

using $$(x,2)$$

$$2 = 2*x + 4$$
$$x = -1$$

$$x - y = -1 - 6 = -7$$
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Re: In the coordinate plane, the line L has slope 2 and y intercept 4.   [#permalink] 24 Oct 2017, 01:51
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