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The graph of which of the following equations is a straight line that [#permalink]
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21 Oct 2015, 21:25
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Re: The graph of which of the following equations is a straight line that [#permalink]
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21 Oct 2015, 23:22
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Vyshak wrote: One of the lines parallel to the given line will have coordinates (3,2). Substitute x = 3 and y = 2. option B satisfies the equation.
Answer: B the slope of the given line is +ve. so you need another +ve slope line to be parallel to it. Only options A and D have that. Out of which only option a matches with the slope of 2/3 of line l. so A.



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The graph of which of the following equations is a straight line that [#permalink]
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Forget conventional ways of solving math questions. In PS, IVY approach is the easiest and quickest way to find the answer. The graph of which of the following equations is a straight line that is parallel to line l in the figure above? (A) 3y − 2x = 0 (B) 3y + 2x = 0 (C) 3y + 2x = 6 (D) 2y − 3x = 6 (E) 2y + 3x = −6 The graph shows that the line passes (3,0) and (0,2). So the difference of x is 3(=0(3)), the difference of y is 2(=20). The gradient of the line is, therefore, 2/3. A parallel line should have the same gradient. Among the chioces only (A) has the gradient 2/3 (3y2x=0 > 3y=2x > y= (2/3) x). So the answer is (A).
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Re: The graph of which of the following equations is a straight line that [#permalink]
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23 Oct 2015, 01:19
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Bunuel wrote: The graph of which of the following equations is a straight line that is parallel to line l in the figure above? (A) 3y − 2x = 0 (B) 3y + 2x = 0 (C) 3y + 2x = 6 (D) 2y − 3x = 6 (E) 2y + 3x = −6 Kudos for a correct solution.Attachment: 20151022_0824.png A line is parallel to line l if it has the same value for m in the formula y=mx+b. So we have to calculate the value of m of the line l in the picture: y2y1/x2x1 = 20 / 0(3) = 2/3 =m = slope of line l If you rewrite (A) to y = 2/3x, you see that A has the same slope. Answer A.
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Re: The graph of which of the following equations is a straight line that [#permalink]
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06 Nov 2015, 22:22
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I'll go with A. For the lines to be parallel, the slope must be the same for the perpendicular lines, the slope of the second line is the negative reciprocal of the slope of the first line. Here, we are looking for a line with the same slope as the drawn line  2/3 only A has the same slope.



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The graph of which of the following equations is a straight line that [#permalink]
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07 Nov 2015, 03:16
Bunuel wrote: The graph of which of the following equations is a straight line that is parallel to line l in the figure above? (A) 3y − 2x = 0 (B) 3y + 2x = 0 (C) 3y + 2x = 6 (D) 2y − 3x = 6 (E) 2y + 3x = −6 Kudos for a correct solution.Attachment: 20151022_0824.png Observation 1: Line is upward rising so SLOPE MUST BE POSITIVE
Observation 2: YIntercept is +2
Observation 3: Slope = 2(yintercept) / 3(xinterecpt) = 2/3Based on "Observation 1" Options B, C and E are ruled out Now, Options A and D remainBased on Observation 3, Option D is ruled out which has slope=3/2 Answer: Option A P.S. Observation 2 in this question was not necessary as we had to find a line parallel to given line for which YIntercept must be different. But these are critical and Primary observations that one must make before starting to solve in question of Coordinate Geometry
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The graph of which of the following equations is a straight line that [#permalink]
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07 Nov 2015, 08:20
Clearly, the line passes through (0,2) and (3,0). The slope for this line : 2/3. A line parallel to this line will have the same slope. So, option(A) is having the slope as 2/3.
Answer is A



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Re: The graph of which of the following equations is a straight line that [#permalink]
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07 Nov 2015, 08:31
GMATinsight wrote: Bunuel wrote: The graph of which of the following equations is a straight line that is parallel to line l in the figure above? (A) 3y − 2x = 0 (B) 3y + 2x = 0 (C) 3y + 2x = 6 (D) 2y − 3x = 6 (E) 2y + 3x = −6 Kudos for a correct solution.Attachment: 20151022_0824.png Observation 1: Line is upward rising so SLOPE MUST BE POSITIVE
Observation 2: YIntercept is +2
Observation 3: Slope = 2(yintercept) / 3(xinterecpt) = 2/3Based on "Observation 1" Options B, C and E are ruled out Now, Options A and D remainBased on Observation 3, Option D is ruled out which has slope=3/2 Answer: Option A P.S. Observation 2 in this question was not necessary as we had to find a line parallel to given line for which YIntercept must be different. But these are critical and Primary observations that one must make before starting to solve in question of Coordinate Geometry hi, even observation 1 is not necesary.... parallel lines have the same slope so obsn 3 is sufficient..
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Re: The graph of which of the following equations is a straight line that [#permalink]
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07 Nov 2015, 08:38
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chetan2u wrote: GMATinsight wrote: Bunuel wrote: The graph of which of the following equations is a straight line that is parallel to line l in the figure above? (A) 3y − 2x = 0 (B) 3y + 2x = 0 (C) 3y + 2x = 6 (D) 2y − 3x = 6 (E) 2y + 3x = −6 Kudos for a correct solution.Attachment: 20151022_0824.png Observation 1: Line is upward rising so SLOPE MUST BE POSITIVE
Observation 2: YIntercept is +2
Observation 3: Slope = 2(yintercept) / 3(xinterecpt) = 2/3Based on "Observation 1" Options B, C and E are ruled out Now, Options A and D remainBased on Observation 3, Option D is ruled out which has slope=3/2 Answer: Option A P.S. Observation 2 in this question was not necessary as we had to find a line parallel to given line for which YIntercept must be different. But these are critical and Primary observations that one must make before starting to solve in question of Coordinate Geometry hi, even observation 1 is not necesary.... parallel lines have the same slope so obsn 3 is sufficient.. It is necessary to rule out B,C,E for their slopes are <0 Either you actually calculate the slope to rule out B,C,E or just look at the positive nature and rule these 3 options out.



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Re: The graph of which of the following equations is a straight line that [#permalink]
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07 Nov 2015, 09:15
Engr2012 wrote: chetan2u wrote: hi, even observation 1 is not necesary.... parallel lines have the same slope so obsn 3 is sufficient..
It is necessary to rule out B,C,E for their slopes are <0 Either you actually calculate the slope to rule out B,C,E or just look at the positive nature and rule these 3 options out. Hi, I think its very straight.. if one observation can eliminate all wrong choices, other observations are not necessary.. arent you required to check for slope.. if any other set of line ,other than llel lines, also has property of same slopes, only then you may require to use other obsn to eliminate choices..
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The graph of which of the following equations is a straight line that [#permalink]
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13 Feb 2016, 19:33
Another way to look at slope can be to interpret it visually by noticing the transition through its two points (intercepts): when y increased by 2 (from 0 to 2), x increased by 3 (from 3 to 0), therefore slope = 2/3.



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Re: The graph of which of the following equations is a straight line that [#permalink]
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11 May 2016, 02:22
Bunuel wrote: The graph of which of the following equations is a straight line that is parallel to line l in the figure above? (A) 3y − 2x = 0 (B) 3y + 2x = 0 (C) 3y + 2x = 6 (D) 2y − 3x = 6 (E) 2y + 3x = −6 Kudos for a correct solution.Attachment: 20151022_0824.png Okay here is a very simple solution but you must understand that slope = rise or drop in y axis/run of x axis.(always take absolute value of x) Now here slope = rise/run=2/3. Parallel line will also have same slope. Check A bcz it is the easiest to check for. ... well we have a slope of 2/3. We don't even have to look at any other option. Answer is ARemember in PS there is only one unique solution to the problem.



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Re: The graph of which of the following equations is a straight line that [#permalink]
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Attached is a visual that should help.
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Re: The graph of which of the following equations is a straight line that [#permalink]
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Here is an algebraic approach
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30 Dec 2016, 23:09
Bunuel wrote: The graph of which of the following equations is a straight line that is parallel to line l in the figure above? (A) 3y − 2x = 0 (B) 3y + 2x = 0 (C) 3y + 2x = 6 (D) 2y − 3x = 6 (E) 2y + 3x = −6 Kudos for a correct solution.From the figure given, we can write the equation of the line l as  \(\frac{y}{2} +\frac{x}{3} = 1\) \(3y  2z = 6\) Now any line which is parallel to the above line can be written as 3y  2z = k where k is any real number. Therefore we just need to look at the answer options and find an equation which matches the above general form. And there is only one option 3y  2z = 0. Hence the correct answer option is A. Thanks, Saquib Quant Expert eGMATTo practise ten 700+ Level Number Properties Questions attempt the The EGMAT Number Properties Knockout
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Re: The graph of which of the following equations is a straight line that [#permalink]
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23 Jan 2017, 03:51
Bunuel wrote: The graph of which of the following equations is a straight line that is parallel to line l in the figure above? (A) 3y − 2x = 0 (B) 3y + 2x = 0 (C) 3y + 2x = 6 (D) 2y − 3x = 6 (E) 2y + 3x = −6 Kudos for a correct solution.Attachment: 20151022_0824.png The slope of the given line in slopeintercept form is y=(2/3)x +4 parallel lines have same slope, so of all the given option only one equation has slope = 2/3. Hence option A is correct.



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Re: The graph of which of the following equations is a straight line that [#permalink]
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25 Jan 2017, 10:15
Bunuel wrote: The graph of which of the following equations is a straight line that is parallel to line l in the figure above? (A) 3y − 2x = 0 (B) 3y + 2x = 0 (C) 3y + 2x = 6 (D) 2y − 3x = 6 (E) 2y + 3x = −6 Recall that if two lines are parallel, then they have the same slope. Therefore, to solve this problem, we need to find the slope of the given line first. Using the provided diagram, we see that we have points of (3,0) and (0,2). So we have a slope of: (change in y)/(change in x) = (0  2)/(3  0) = 2/3 = 2/3 We also see that the y intercept is 2; thus, the equation of line l is: y = (2/3)x + 2 We can manipulate the equation for line l to look more like the answer choices. We can start by multiplying the entire equation by 3 and we obtain: 3y = 2x + 6 3y  2x = 6 Since answer choice A is the only answer with “3y  2x,” we see that 3y  2x = 0, must be parallel to line l. Answer: A
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Re: The graph of which of the following equations is a straight line that [#permalink]
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01 Mar 2017, 19:38
Using the points (0,2) and (3,0) in the line equation we get the slope as 2/3 . While trying to find the slope of given options using what is y/x we see that Option A has slope 2/3. According to the parallel rule that slope of line 1 =slope of line 2. We can say that Option A is the correct answer



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Re: The graph of which of the following equations is a straight line that [#permalink]
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18 May 2017, 22:28
Rule 1  Parallel lines have the same slope. Rule 2  If y increases, as x increases then slope is always positive => It means option B,C and E out due to negative slope slope of line > y intercept/x intercept => 2/3 so answer is A



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