document.write( "Question 918430: Keir replaces the second equation in the system below with the second equation plus the 3 times the first equation. Which equivalent system of equations is the result?
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document.write( "{y=2x-7
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document.write( "{y=-6x+9\r
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document.write( "(Choices)\r
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document.write( "A.{y=2x-7
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document.write( " {y=-3\r
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document.write( "B.{y=2x-7
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document.write( " {y=0.5\r
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document.write( "C.{y=2x-7
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document.write( " {y=2\r
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document.write( "D.{y=2x-7
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document.write( " {y=12 \n" );
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Algebra.Com's Answer #557043 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Keir replaces the second equation in the system below with the second equation plus the 3 times the first equation. Which equivalent system of equations is the result? \n" ); document.write( " {y=2x-7 \n" ); document.write( " {y=-6x+9 \n" ); document.write( "------- \n" ); document.write( "Ans:: \n" ); document.write( "{y = 2x-7 \n" ); document.write( "{y = -6x+9+3(2x-7) = -6x + 9 + 6x - 21 which simplifies to y = -12 \n" ); document.write( "--------------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan h. \n" ); document.write( "--------------- \n" ); document.write( "-------------------------- \n" ); document.write( " \n" ); document.write( " |