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A straight line is parallel to the x-axis and passes through the intersection of the lines $x+2y+1=0$ and $y=x+7$.Find the equation of the straight line.

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Let us solve the given equations x+2y =-1 and -x+y=7 We get x =-5 and y =2 Since the line parallel to x axis passes through these points, the equation of the required line is y= 2
answered Sep 2, 2015 by vijayalakshmi.r

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