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Which of the following lines is parallel to line

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alimad
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Which of the following lines is parallel to line [#permalink] New post   08 Jul 2006, 08:20
Which of the following lines is parallel to line \(x = 1.44 - 3y\) ?

(A) \(y = \frac{x}{6} + 25\)
(B) \(y = 0.48 - \frac{x}{3}\)
(C) \(\frac{x}{3} - y = 2\)
(D) \(y + \frac{x}{3} = 10\)
(E) \(\frac{x}{4} + 3y = 1\)

Please provide explanation

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Re: Which of the following lines is parallel to line [#permalink] New post   08 Jul 2006, 08:35
alimad wrote:
Which of the following lines is parallel to line x = 1.44 - 3*y

y = x/6 + 25
y = .48 - x/3
x/3 - y = 2
y + x/3 = 10
x/4 + 3 * y = 1

Please provide explaination


|| lines have same slope
the given equation has slope = -1/3

so A, C, E out...

B is the same equation as the given equation once you simplify... so B out

D has same slope and y-intersect is different. They will not xcross each other.
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XxxyyY
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Re: Which of the following lines is parallel to line [#permalink] New post   08 Jul 2006, 09:24
It is D.

to be || m1=m2 or in the general form a1/a2=b1/b2.
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Re: Which of the following lines is parallel to line [#permalink] New post   21 Feb 2012, 07:17
acfuture wrote:
alimad wrote:
Which of the following lines is parallel to line x = 1.44 - 3*y

y = x/6 + 25
y = .48 - x/3
x/3 - y = 2
y + x/3 = 10
x/4 + 3 * y = 1

Please provide explaination


|| lines have same slope
the given equation has slope = -1/3

so A, C, E out...

B is the same equation as the given equation once you simplify... so B out

D has same slope and y-intersect is different. They will not xcross each other.


I was thinking there is something wrong with B. Now I understand, for 2 lines to be || their constants also need to be different. Good point!

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Re: Which of the following lines is parallel to line [#permalink]
21 Feb 2012, 07:17
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