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Which of the following is NOT a point on line l?

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Which of the following is NOT a point on line l?  [#permalink]

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New post 29 Aug 2018, 03:51
00:00
A
B
C
D
E

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  35% (medium)

Question Stats:

66% (01:16) correct 34% (01:51) wrong based on 58 sessions

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Which of the following is NOT a point on line l?


A. (44 , 27)
B. (12 , 3)
C. (9 , 0.75)
D. (4, –3)
E. (2, 6)


Attachment:
image014.jpg
image014.jpg [ 3.04 KiB | Viewed 617 times ]

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Re: Which of the following is NOT a point on line l?  [#permalink]

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New post 29 Aug 2018, 04:53
Bunuel wrote:
Image
Which of the following is NOT a point on line l?


A. (44 , 27)
B. (12 , 3)
C. (9 , 0.75)
D. (4, –3)
E. (2, 6)


Attachment:
1535543725423.jpg
1535543725423.jpg [ 78.83 KiB | Viewed 493 times ]
Imho answer is E
Attachment:
1535543725423.jpg
1535543725423.jpg [ 78.83 KiB | Viewed 493 times ]


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Which of the following is NOT a point on line l?  [#permalink]

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New post Updated on: 29 Aug 2018, 05:51
Bunuel wrote:
Image
Which of the following is NOT a point on line l?


A. (44 , 27)
B. (12 , 3)
C. (9 , 0.75)
D. (4, –3)
E. (2, 6)


Attachment:
image014.jpg


When Slope line passing through unknown point(x,y) and (0,-6) or (8,0) is equal to Slope of line passing through points (0,-6) and (8,0) then that point lies on the given line.

Slope of line passing through points (0,-6) and (8,0)=\(\frac{0-(-6)}{8-0}\)=\(\frac{3}{4}\)

Let's check slope of line (0,-6) and (x,y) from answer options.

A. slope=33/44=3/4 DISCARD
B. Slope=9/8=3/4 DISCARD
C.Slope=6.75/9=3/4 DISCARD
D. Slope=3/4 DISCARD
E. Slope=12/2=6 KEEP

Ans. (E)

Hi sumit411,
Answer is E.
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Originally posted by PKN on 29 Aug 2018, 04:56.
Last edited by PKN on 29 Aug 2018, 05:51, edited 3 times in total.
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Re: Which of the following is NOT a point on line l?  [#permalink]

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New post 29 Aug 2018, 05:35
Hi PKN,

Can you please check option D and E again and let me know where I went wrong.

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Sumit

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Re: Which of the following is NOT a point on line l?  [#permalink]

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New post 29 Aug 2018, 06:45
1
If you observe the line , you can see if x is between 0 and 8 , y cannot be positive.
Option E
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Re: Which of the following is NOT a point on line l?  [#permalink]

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New post 02 Sep 2018, 11:03
Bunuel wrote:
Image
Which of the following is NOT a point on line l?


A. (44 , 27)
B. (12 , 3)
C. (9 , 0.75)
D. (4, –3)
E. (2, 6)


Attachment:
image014.jpg


From the line l, when x becomes less than 8, Y should be negative even if X becomes negative. when x becomes more than 8, Y should be positive. option E does not obey this. (2,6) is NOT a point on line l
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Which of the following is NOT a point on line l?  [#permalink]

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New post 02 Sep 2018, 12:32
PKN wrote:
Bunuel wrote:
Image
Which of the following is NOT a point on line l?


A. (44 , 27)
B. (12 , 3)
C. (9 , 0.75)
D. (4, –3)
E. (2, 6)


Attachment:
image014.jpg


When Slope line passing through unknown point(x,y) and (0,-6) or (8,0) is equal to Slope of line passing through points (0,-6) and (8,0) then that point lies on the given line.

Slope of line passing through points (0,-6) and (8,0)=\(\frac{0-(-6)}{8-0}\)=\(\frac{3}{4}\)

Let's check slope of line (0,-6) and (x,y) from answer options.

A. slope=33/44=3/4 DISCARD
B. Slope=9/8=3/4 DISCARD
C.Slope=6.75/9=3/4 DISCARD
D. Slope=3/4 DISCARD
E. Slope=12/2=6 KEEP

Ans. (E)

Hi sumit411,
Answer is E.


Hey PKN

okay, i know slope is \(\frac{3}{4}\)

but what calculations did you perform to eliminate incorrect answer choices and leave a correct one ?

A. slope=33/44=3/4 DISCARD (how about here ? )
B. Slope=9/8=3/4 DISCARD (here I get, you reduce fraction )
C.Slope=6.75/9=3/4 DISCARD (And here ?)
D. Slope=3/4 DISCARD
E. Slope=12/2=6 KEEP (and here :?)

thank you
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Re: Which of the following is NOT a point on line l?  [#permalink]

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New post 02 Sep 2018, 19:44
1
dave13 wrote:
PKN wrote:
Bunuel wrote:
Image
Which of the following is NOT a point on line l?


A. (44 , 27)
B. (12 , 3)
C. (9 , 0.75)
D. (4, –3)
E. (2, 6)


Attachment:
image014.jpg


When Slope line passing through unknown point(x,y) and (0,-6) or (8,0) is equal to Slope of line passing through points (0,-6) and (8,0) then that point lies on the given line.

Slope of line passing through points (0,-6) and (8,0)=\(\frac{0-(-6)}{8-0}\)=\(\frac{3}{4}\)

Let's check slope of line (0,-6) and (x,y) from answer options.

A. slope=33/44=3/4 DISCARD
B. Slope=9/8=3/4 DISCARD
C.Slope=6.75/9=3/4 DISCARD
D. Slope=3/4 DISCARD
E. Slope=12/2=6 KEEP

Ans. (E)

Hi sumit411,
Answer is E.


Hey PKN

okay, i know slope is \(\frac{3}{4}\)

but what calculations did you perform to eliminate incorrect answer choices and leave a correct one ?

A. slope=33/44=3/4 DISCARD (how about here ? )
B. Slope=9/8=3/4 DISCARD (here I get, you reduce fraction )
C.Slope=6.75/9=3/4 DISCARD (And here ?)
D. Slope=3/4 DISCARD
E. Slope=12/2=6 KEEP (and here :?)

thank you


Hi dave13,
When Slope line passing through unknown point(x,y) and (0,-6) or (8,0) is equal to Slope of line passing through points (0,-6) and (8,0) then that point lies on the given line. This unknown point(x,y) is given in answer options.
A. slope of line passing through (0,-6) and (44,27)=\(\frac{27-(-6)}{44-0}\)=3/4 DISCARD
B. slope of line passing through (0,-6) and (12,3)=\(\frac{3-(-6)}{12-0}\)=9/12=3/4 DISCARD
C.slope of line passing through (0,-6) and (9,0.75)=\(\frac{0.75-(-6)}{9-0}\)=6.75/9=3/4 DISCARD
D. slope of line passing through (0,-6) and (4,-3)=\(\frac{-3-(-6)}{4-0}\)=3/4 DISCARD
E. slope of line passing through (0,-6) and (2,6)=\(\frac{6-(-6)}{2-0}\)=12/2=6 KEEP

Since A,B,C, and D match the slope 3/4 , Hence these options are to be discarded as per question stem.


Ans. (E)

P.S:- You will get the same result if (x,y)=(8,0).
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Regards,

PKN

Rise above the storm, you will find the sunshine

Re: Which of the following is NOT a point on line l? &nbs [#permalink] 02 Sep 2018, 19:44
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