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Line k lies in the xy-plane. The x-intercept of line k is -4, and line

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Line k lies in the xy-plane. The x-intercept of line k is -4, and line  [#permalink]

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New post 18 Dec 2018, 23:41
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Line k lies in the xy-plane. The x-intercept of line k is -4, and line k passes through the midpoint of the line segment whose endpoints are (2, 9), and (2, 0). What is the slope of line k ?

A. 1/8
B. 1/4
C. 1/2
D. 3/4
E. 7/8

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Re: Line k lies in the xy-plane. The x-intercept of line k is -4, and line  [#permalink]

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New post 19 Dec 2018, 08:01
Bunuel wrote:
Line k lies in the xy-plane. The x-intercept of line k is -4, and line k passes through the midpoint of the line segment whose endpoints are and (2, 9), and (2, 0). What is the slope of line k ?

A. 1/8
B. 1/4
C. 1/2
D. 3/4
E. 7/8



Bunuel : is the bold part of question correct?

]Line k lies in the xy-plane. The x-intercept of line k is -4, and line k passes through the midpoint of the line segment whose endpoints are and (2, 9), and (2, 0). What is the slope of line k ?
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Re: Line k lies in the xy-plane. The x-intercept of line k is -4, and line  [#permalink]

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New post 19 Dec 2018, 20:34
Archit3110 wrote:
Bunuel wrote:
Line k lies in the xy-plane. The x-intercept of line k is -4, and line k passes through the midpoint of the line segment whose endpoints are and (2, 9), and (2, 0). What is the slope of line k ?

A. 1/8
B. 1/4
C. 1/2
D. 3/4
E. 7/8



Bunuel : is the bold part of question correct?

]Line k lies in the xy-plane. The x-intercept of line k is -4, and line k passes through the midpoint of the line segment whose endpoints are and (2, 9), and (2, 0). What is the slope of line k ?


Extra "and" there was a typo. Edited. Thank you.
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Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


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Line k lies in the xy-plane. The x-intercept of line k is -4, and line  [#permalink]

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New post Updated on: 28 Dec 2018, 00:07
Bunuel wrote:
Line k lies in the xy-plane. The x-intercept of line k is -4, and line k passes through the midpoint of the line segment whose endpoints are (2, 9), and (2, 0). What is the slope of line k ?

A. 1/8
B. 1/4
C. 1/2
D. 3/4
E. 7/8



good question..

plot on graph the values for (2,9) & (2,0) ; the mid point of this line would be (2,4.5) which would be the point of intersection of the line k
slope of line k : ( 4.5-0)/(2+4) = 4.5/6 ~ 3/4 IMO D
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Originally posted by Archit3110 on 20 Dec 2018, 00:13.
Last edited by Archit3110 on 28 Dec 2018, 00:07, edited 1 time in total.
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Line k lies in the xy-plane. The x-intercept of line k is -4, and line  [#permalink]

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New post 23 Dec 2018, 21:17
can we calculate slope from equation y =mx+c?
4.5= m*2-4 (here -4 is x intercept)
then m =8.5/2=17/4 , what is wring here?




Archit3110 wrote:
Bunuel wrote:
Line k lies in the xy-plane. The x-intercept of line k is -4, and line k passes through the midpoint of the line segment whose endpoints are (2, 9), and (2, 0). What is the slope of line k ?

A. 1/8
B. 1/4
C. 1/2
D. 3/4
E. 7/8



good question..

plot on graph the values for (2,9) & (2,0) ; the mid point of this line would be (2,4.5) which would be the point of intersection of the line k

mid point of line k : ( 4.5-0)/(2+4) = 4.5/6 ~ 3/4 IMO D

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Re: Line k lies in the xy-plane. The x-intercept of line k is -4, and line  [#permalink]

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New post 23 Dec 2018, 21:59
sunita123
In a linear equation y= mx + c
: m is the slope of the line. c is the value of the intercept on the y-axis.

-4 is the x intercept not y..

Hope this helps..


sunita123 wrote:
can we calculate slope from equation y =mx+c?
4.5= m*2-4 (here -4 is x intercept)
then m =8.5/2=17/4 , what is wring here?




Archit3110 wrote:
Bunuel wrote:
Line k lies in the xy-plane. The x-intercept of line k is -4, and line k passes through the midpoint of the line segment whose endpoints are (2, 9), and (2, 0). What is the slope of line k ?

A. 1/8
B. 1/4
C. 1/2
D. 3/4
E. 7/8



good question..

plot on graph the values for (2,9) & (2,0) ; the mid point of this line would be (2,4.5) which would be the point of intersection of the line k

mid point of line k : ( 4.5-0)/(2+4) = 4.5/6 ~ 3/4 IMO D

_________________

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Re: Line k lies in the xy-plane. The x-intercept of line k is -4, and line  [#permalink]

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New post 24 Dec 2018, 08:34
Ah , my bad , that is Y intercept . Thank you very much Archit3110.
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Re: Line k lies in the xy-plane. The x-intercept of line k is -4, and line  [#permalink]

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New post 27 Dec 2018, 12:13
Archit3110 is it the slope or the midpoint of line k ? y2-y1/x2-x1
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Re: Line k lies in the xy-plane. The x-intercept of line k is -4, and line  [#permalink]

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New post 28 Dec 2018, 00:08
Srikantchamarthi wrote:
Archit3110 is it the slope or the midpoint of line k ? y2-y1/x2-x1



Srikantchamarthi

slope m = y2-y1/x2-x1

mid point= x1+x2/2 , y1+y2/2
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Re: Line k lies in the xy-plane. The x-intercept of line k is -4, and line &nbs [#permalink] 28 Dec 2018, 00:08
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Line k lies in the xy-plane. The x-intercept of line k is -4, and line

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