document.write( "Question 853295: P is the point (-1,3) . Q is the point (2,-1)
\n" ); document.write( "What is the equation of vertical line through Q?
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Algebra.Com's Answer #514011 by Kingsley(15)\"\" \"About 
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Y - Y1/X - X1=Y2 - Y1/X2 - X1
\n" ); document.write( "y-3/x+1 = -4/3
\n" ); document.write( "-4x-4=3y-9
\n" ); document.write( "-4x+5=3y
\n" ); document.write( "therefore Y=-4x+5/3
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