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Which of the lines in the figure above contains only points

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Which of the lines in the figure above contains only points [#permalink] New post   03 May 2015, 01:35
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Which of the lines in the figure above contains only points (x,y) with x = y?

(A) A
(B) B
(C) C
(D) D
(E) E
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D
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Re: GRE Math Challenge #76 [#permalink] New post   09 Jul 2015, 03:54
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the answer is D as d is a straight line passing through center
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Re: GRE Math Challenge #76 [#permalink] New post   10 Jul 2015, 18:39
ok
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Re: Which of the lines in the figure above contains only points [#permalink] New post   02 Nov 2018, 12:57
why not line B?
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Re: Which of the lines in the figure above contains only points [#permalink] New post   02 Nov 2018, 16:17
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indiragre18 wrote:
why not line B?



Line B is \(y=-x\). When x is negative y is positive and vice versa.
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Re: Which of the lines in the figure above contains only points [#permalink] New post   19 Feb 2020, 14:26
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GIVEN: equation of line is x = y

Anther approach is to rewrite equation in slope y-intercept form y = mx + b, where m = slope of the line, and b = the y-intercept
Take the equation x = y and rewrite as: y = 1x + 0

Aha, so the line's slope is 1, and its y-intercept is 0
Line D is the only line with a positive slope, AND line D also has a y-intercept of 0

Answer: D
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Re: Which of the lines in the figure above contains only points [#permalink] New post   30 Jun 2021, 04:26
Hello from the GRE Prep Club BumpBot!

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Re: Which of the lines in the figure above contains only points [#permalink]
30 Jun 2021, 04:26
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