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In the coordinate system above, which of the following could be the eq

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In the coordinate system above, which of the following could be the eq  [#permalink]

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New post 18 Oct 2018, 01:09
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

63% (01:25) correct 37% (01:43) wrong based on 54 sessions

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In the coordinate system above, which of the following could be the equation of line p?

A. 5x + 12y = 30
B. 12x + 5y = 30
C. 5x – 12y = 30
D. 12x – 5y = 30
E. 5x + 12y = –30


Attachment:
GMAT_PS_Magoosh_212.png
GMAT_PS_Magoosh_212.png [ 12.27 KiB | Viewed 499 times ]

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Re: In the coordinate system above, which of the following could be the eq  [#permalink]

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New post 18 Oct 2018, 05:44
X intercept is 6, Y intercept is 2.5

Substitute (6,0) and (0,2.5) to get answer Option A
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Re: In the coordinate system above, which of the following could be the eq  [#permalink]

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New post 19 Oct 2018, 14:22
Bunuel wrote:
Image
In the coordinate system above, which of the following could be the equation of line p?

A. 5x + 12y = 30
B. 12x + 5y = 30
C. 5x – 12y = 30
D. 12x – 5y = 30
E. 5x + 12y = –30


Attachment:
GMAT_PS_Magoosh_212.png


We see that the y-intercept of line p is 2.5, and its slope is -2.5/6 = -5/12. Using the slope-intercept form of the line, y = mx + b, we have:

y = -(5/12)x + 2.5

12y = -5x + 30

5x + 12y = 30

Answer: A
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Re: In the coordinate system above, which of the following could be the eq &nbs [#permalink] 19 Oct 2018, 14:22
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In the coordinate system above, which of the following could be the eq

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