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

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

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New post Updated on: 12 Nov 2013, 02:35
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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, 22:33.
Last edited by Bunuel on 12 Nov 2013, 02:35, edited 1 time in total.
Edited the question.
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Re: D.S  [#permalink]

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New post 29 Jul 2010, 22:47
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: \(D=\sqrt{(a-c)^2+(b-d)^2}=\sqrt{3^2+4^2}=5\).

Answer: C.

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

Hope it helps.
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Re: In the xy plane, point p has coordinates (a,b) and point Q  [#permalink]

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New post 12 Nov 2013, 02:07
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 ?
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Re: In the xy plane, point p has coordinates (a,b) and point Q  [#permalink]

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New post 12 Nov 2013, 02:36
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.
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

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.


What are GMAT Club Tests?
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Re: In the xy plane, point p has coordinates (a,b) and point Q  [#permalink]

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Re: In the xy plane, point p has coordinates (a,b) and point Q &nbs [#permalink] 09 Aug 2018, 16:26
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