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In the xyplane, what is the slope of the line with equation [#permalink]
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15 Oct 2012, 04:15
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Re: In the xyplane, what is the slope of the line with equation [#permalink]
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15 Oct 2012, 04:15



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Re: In the xyplane, what is the slope of the line with equation [#permalink]
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15 Oct 2012, 04:27
The equation can be rearranged as \(y = (3/7)x + 9/7\) If the equation of a line is y = mx +c, the slope is m Thus the slope of the above equation is \(3/7\) Answer B
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Re: In the xyplane, what is the slope of the line with equation [#permalink]
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15 Oct 2012, 07:28
3x + 7y = 9
7y = 9 3x (Isolate the term 7y on one side)
y= 9/7  3x/7 (Divide both sides by 7)
y = mx + b => y= (3/7)x + 9/7
m= 3/7
Answer: B



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Re: In the xyplane, what is the slope of the line with equation [#permalink]
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15 Oct 2012, 10:54
Another solution is, find points on X and Y axis where this line intersects them, by substituting x=0 and y=0 respectively in the equation of line. So two points on line found this way are (0,9/7) and (3,0) Hence slope of line = (y2y1)/(x2x1) = (09/7)/(30) = 3/7 Hence ans B. Bunuel wrote: The Official Guide for GMAT® Review, 13th Edition  Quantitative Questions ProjectIn the xyplane, what is the slope of the line with equation 3x + 7y = 9 ? (A) 7/3 (B) 3/7 (C) 3/7 (D) 3 (E) 7 Practice Questions Question: 61 Page: 160 Difficulty: 600 GMAT Club is introducing a new project: The Official Guide for GMAT® Review, 13th Edition  Quantitative Questions ProjectEach week we'll be posting several questions from The Official Guide for GMAT® Review, 13th Edition and then after couple of days we'll provide Official Answer (OA) to them along with a solution. We'll be glad if you participate in development of this project: 1. Please provide your solutions to the questions; 2. Please vote for the best solutions by pressing Kudos button; 3. Please vote for the questions themselves by pressing Kudos button; 4. Please share your views on difficulty level of the questions, so that we have most precise evaluation. Thank you!
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Re: In the xyplane, what is the slope of the line with equation [#permalink]
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15 Oct 2012, 23:33
For a general equation ax+by+c=0
the slope is = a/b
so it'll be 3/7
Hope it helps !!



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Re: In the xyplane, what is the slope of the line with equation [#permalink]
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16 Oct 2012, 03:35
7y=3x + 9
the equation of a slop is y=mx+b
then y=3/7X + 9/7
hence slope is 3/7
Answer B



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Re: In the xyplane, what is the slope of the line with equation [#permalink]
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19 Oct 2012, 04:05



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Re: In the xyplane, what is the slope of the line with equation [#permalink]
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11 Sep 2014, 00:20
Bunuel wrote: In the xyplane, what is the slope of the line with equation 3x + 7y = 9 ? (A) 7/3 (B) 3/7 (C) 3/7 (D) 3 (E) 7 Practice Questions Question: 61 Page: 160 Difficulty: 600 y=mx+b mslope rearrange the given eqn then m=3/7



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Re: In the xyplane, what is the slope of the line with equation [#permalink]
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03 Jun 2016, 06:36
Bunuel wrote: In the xyplane, what is the slope of the line with equation 3x + 7y = 9 ?
(A) 7/3 (B) 3/7 (C) 3/7 (D) 3 (E) 7 The easiest way to determine the slope of the line is to put the equation of the line into slopeintercept form, which is y = mx + b, where m = slope and b = the yintercept. We must rewrite the given equation 3x + 7y = 9 to get y by itself on the left. 3x + 7y = 9 7y = 3x + 9 y = (3/7)x + 9/7 Using the general slopeintercept form of y = mx + b, we see that the slope m = 3/7 Answer B.
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In the xyplane, what is the slope of the line with equation [#permalink]
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27 Jun 2017, 14:05
In the xyplane, what is the slope of the line with equation 3x + 7y = 9 ?\(3x + 7y = 9\) In order to determine the slope, we can arrange the equation in the SLOPE INTERCEPT form of the equation. \(y = mx + b\) ===> Where m is the slope \(3x + 7y = 9\) \(7y =  3x + 9\) \(y = \frac{3}{7} * x + \frac{9}{7}\) Comparing above equation with \(y = mx + b\) We get \(m = \frac{3}{7}\) Hence, Answer is B
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Re: In the xyplane, what is the slope of the line with equation [#permalink]
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28 Dec 2017, 05:24
Hi Bunuel,
When you write difficult level say 600 Level, what is the basis of the same? I think some questions fall around 500 level or less like these.
Thanks




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