document.write( "Question 368733: y=5x+6
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document.write( "-18x+3y=-54
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document.write( "Are the graphs of the lines in the pair parallel? Explain.\r
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document.write( "Solution:
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document.write( "In the second equation, divide everything by 3: -6x+y=-54
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document.write( "Then, add 54 to each side: 54-6x+y=0
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document.write( "Next, subtract y from each side: -6x+54=-y
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document.write( "Now, add the two equations together: 0=-x+60
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document.write( "Finally, add x to both sides: x=60
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document.write( "The equation \"x=60\" denotes a vertical line, but the equation \"y=5x+6\" denotes a line with a slope of 5, so the lines are not parallel. \n" );
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Algebra.Com's Answer #262699 by mananth(16946)![]() ![]() You can put this solution on YOUR website! y=5x+6..............1\r \n" ); document.write( "\n" ); document.write( "... \n" ); document.write( "-18x+3y=-54\r \n" ); document.write( "\n" ); document.write( "3y= 18x-54 \n" ); document.write( "/3 \n" ); document.write( "y = 6x -18 .......2 \n" ); document.write( "compare the slopes. \n" ); document.write( "They are not the same. Hence they are not parallel lines. \n" ); document.write( ".. \n" ); document.write( " \n" ); document.write( "... \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " |