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Show that the line joining (2,-3) and (-5,1) is parallel to the linejoining (7,-1) and (0,3). |
Answer» Let A(2,-3), B(-5,1), C(7,-1) and D(0,3) be the given points. Then, slope of AB=`(1-(-3))/(-5-2)=(4)/(-7)=-(4)/(7)` And, slope of CD=`(3-(-1))/(0-7)=(4)/(-7)=-(4)/(7)` `therefore` slope of AB=slope of CD. Hence, `AB ||CD` |
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