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# In the xy plane, point p has coordinates (a,b) and point Q

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Manager
Joined: 09 Jun 2010
Posts: 52
In the xy plane, point p has coordinates (a,b) and point Q  [#permalink]

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Updated on: 12 Nov 2013, 03:35
3
00:00

Difficulty:

5% (low)

Question Stats:

84% (00:44) correct 16% (01:06) wrong based on 178 sessions

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In the xy plane, point P has coordinates (a,b) and point Q has coordinate(c,d). What is the distance between point Q and point P ?

(1) b - d = 4
(2) a - c = 3

I dont understand this type of question, I mean the xy plane ! so if there a formula to follow in case then someone help me out

thanks

Originally posted by xmagedo on 29 Jul 2010, 23:33.
Last edited by Bunuel on 12 Nov 2013, 03:35, edited 1 time in total.
Edited the question.
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Joined: 02 Sep 2009
Posts: 58445

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29 Jul 2010, 23:47
6
1
xmagedo wrote:
In the xy plane, point p has coordinates (a,b) and point Q has coordinate(c,d). What is the distance between point Q ?

1 b-d=4
2 a-c=3

I dont understand this type of question, I mean the xy plane ! so if there a formula to follow in case then someone help me out

thanks

Distance between point $$A(x_1,y_1)$$ and $$B(x_2,y_2)$$ can be found by the formula $$D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$$.

So the distance between point $$P(a,b)$$ and point $$Q(c,d)$$ would be $$D=\sqrt{(a-c)^2+(b-d)^2}$$.

(1) b-d=4 --> don't know a-c. Not sufficient.
(2) a-c=3 --> don't know b-d. Not sufficient.

(1)+(2) We have all necessary info. Sufficient: $$D=\sqrt{(a-c)^2+(b-d)^2}=\sqrt{3^2+4^2}=5$$.

For more on this topic check Coordinate Geometry chapter of Math Book (link in my signature).

Hope it helps.
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Manager
Joined: 26 Feb 2013
Posts: 148
Re: In the xy plane, point p has coordinates (a,b) and point Q  [#permalink]

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12 Nov 2013, 03:07
1
xmagedo wrote:
In the xy plane, point p has coordinates (a,b) and point Q has coordinate(c,d). What is the distance between point Q ?

(1) b-d=4
(2) a-c=3

I dont understand this type of question, I mean the xy plane ! so if there a formula to follow in case then someone help me out

thanks

Please correct the question, " What is the distance between point Q and point P ?
Math Expert
Joined: 02 Sep 2009
Posts: 58445
Re: In the xy plane, point p has coordinates (a,b) and point Q  [#permalink]

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12 Nov 2013, 03:36
Skag55 wrote:
xmagedo wrote:
In the xy plane, point p has coordinates (a,b) and point Q has coordinate(c,d). What is the distance between point Q ?

(1) b-d=4
(2) a-c=3

I dont understand this type of question, I mean the xy plane ! so if there a formula to follow in case then someone help me out

thanks

Please correct the question, " What is the distance between point Q and point P ?

_____________
Done. Thank you.
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Joined: 09 Sep 2013
Posts: 13275
Re: In the xy plane, point p has coordinates (a,b) and point Q  [#permalink]

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09 Aug 2018, 17:26
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: In the xy plane, point p has coordinates (a,b) and point Q   [#permalink] 09 Aug 2018, 17:26
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