Coordinate Geometry

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» Coordinate Geometry

Question

Sep 23, 2007, 11:20 AM

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Join Date: Sep 2007

Posts: 1

Coordinate Geometry

what is the distance between the lines if the equations of the 2 parallel lines are. Please show complete solutions.

L1: x-y+5=0
L2: x-y-3=0

Answers

Sep 23, 2007, 11:56 AM	#2

galactus Mathematics Expert Join Date: Sep 2006 Location: Chaneysville, Pa. Posts: 975	Choose a point, $(x_{0}, y_{0})$ , on one of the lines and use the formula for the distance between that point and the other line. $d=\frac{\|Ax_{0}+By_{0}+C\|}{\sqrt{A^{2}+B^{2}}}$

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