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M02-27

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M02-27  [#permalink]

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New post 16 Sep 2014, 00:18
1
6
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

96% (00:41) correct 4% (01:31) wrong based on 214 sessions

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Re M02-27  [#permalink]

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New post 16 Sep 2014, 00:18
2
Official Solution:

If in the xy plane line \(m\) has the equation \(y=3x-8\), then line \(m\) passes through which of the following points?

A. (3, 1)
B. (3, 4)
C. (4, 2)
D. (6, 9)
E. (6, 15)


Backsolve. Plug in the value of \(x\), the first coordinate into the given equation, and check if the value of \(y\) matches.

For example, start with answer choice (C), (4, 2). If \(x = 4\), \(y = 3 * 4 - 8\), \(y = 4\). That does not match 2.

For answer choice (A), (3,1), if \(x = 3\), \(y = 3 * 3 - 8 = 1\). The answer matches.


Answer: A
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Re M02-27  [#permalink]

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New post 19 Mar 2015, 02:35
I think this question is good and helpful.
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Re: M02-27  [#permalink]

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New post 18 Oct 2018, 05:29
best way to put the values of x and y from the options in the equation-
1) x=3x=3 , y=3∗3−8=1
Ans- A
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Re: M02-27  [#permalink]

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New post 16 May 2019, 06:29
such an easy pesy question
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Re: M02-27  [#permalink]

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New post 16 May 2019, 06:46
1
Bunuel wrote:
If in the xy plane line \(m\) has the equation \(y=3x-8\), then line \(m\) passes through which of the following points?

A. (3, 1)
B. (3, 4)
C. (4, 2)
D. (6, 9)
E. (6, 15)


My approach, put the x-coordinate in the given equation and find whether the answer is matching the y-coordinate.

y=3x-8, putting x=3 we are getting y=1. So A. (3, 1) satisfies the equation. This point is on the line m.
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Re: M02-27  [#permalink]

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New post 18 May 2019, 16:00
Good and easy question

Posted from my mobile device
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Re: M02-27  [#permalink]

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New post 24 Aug 2019, 10:55
Bunuel wrote:
Official Solution:

If in the xy plane line \(m\) has the equation \(y=3x-8\), then line \(m\) passes through which of the following points?

A. (3, 1)
B. (3, 4)
C. (4, 2)
D. (6, 9)
E. (6, 15)


Backsolve. Plug in the value of \(x\), the first coordinate into the given equation, and check if the value of \(y\) matches.

For example, start with answer choice (C), (4, 2). If \(x = 4\), \(y = 3 * 4 - 8\), \(y = 4\). That does not match 2.

For answer choice (A), (3,1), if \(x = 3\), \(y = 3 * 3 - 8 = 1\). The answer matches.


Answer: A


Hi Bunuel,

I was trying to find the x and y intercept and the answer wasn't matching the solution. Why is my way incorrect? Can you please explain.
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Re: M02-27  [#permalink]

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New post 25 Aug 2019, 00:55
nishatfarhat87 wrote:
Bunuel wrote:
Official Solution:

If in the xy plane line \(m\) has the equation \(y=3x-8\), then line \(m\) passes through which of the following points?

A. (3, 1)
B. (3, 4)
C. (4, 2)
D. (6, 9)
E. (6, 15)


Backsolve. Plug in the value of \(x\), the first coordinate into the given equation, and check if the value of \(y\) matches.

For example, start with answer choice (C), (4, 2). If \(x = 4\), \(y = 3 * 4 - 8\), \(y = 4\). That does not match 2.

For answer choice (A), (3,1), if \(x = 3\), \(y = 3 * 3 - 8 = 1\). The answer matches.


Answer: A


Hi Bunuel,

I was trying to find the x and y intercept and the answer wasn't matching the solution. Why is my way incorrect? Can you please explain.


Why do you need to find x and y-intercept? Also, you forgot to write down your approach.
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Re: M02-27  [#permalink]

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New post 12 Oct 2019, 23:29
Why cant we find the points by first plugging in X=0, and then Y=0?
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Re: M02-27  [#permalink]

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New post 13 Oct 2019, 00:50
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Re: M02-27   [#permalink] 13 Oct 2019, 00:50
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