document.write( "Question 551115: Which two lines are parallel?\r
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document.write( "A. 5y = –3x – 5
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document.write( "B. 5y = –5 – 3x
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document.write( "C. 3y – 2x = –1\r
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document.write( " Is the line through points P(–7, 2) and Q(7, –6) parallel to the line through points R(–1, –5) and S(–3, –1)? Explain. \n" );
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Algebra.Com's Answer #359410 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Which two lines are parallel?\r \n" ); document.write( "\n" ); document.write( "A. 5y = –3x – 5 \n" ); document.write( "B. 5y = –5 – 3x \n" ); document.write( "C. 3y – 2x = –1 \n" ); document.write( "------------------- \n" ); document.write( "A & B are the same equation. Not parallel, but coincident. \n" ); document.write( "--------------------\r \n" ); document.write( "\n" ); document.write( " Is the line through points P(–7,2) and Q(7,–6) parallel to the line through points R(–1,–5) and S(–3,–1)? Explain. \n" ); document.write( "------------ \n" ); document.write( "Find the slope of each pair. \n" ); document.write( "Slope, m = diffy/diffx \n" ); document.write( "For P & Q, = (2 - (-6))/(-7 - 7) = 8/-14 \n" ); document.write( "m = -4/7 \n" ); document.write( "--------- \n" ); document.write( "Find the slope for R & S. \n" ); document.write( "If the slope is the same, they're parallel. \n" ); document.write( " |