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?
\n" ); document.write( "{y=2x-7
\n" ); document.write( "{y=-6x+9\r
\n" ); document.write( "\n" ); document.write( "(Choices)\r
\n" ); document.write( "\n" ); document.write( "A.{y=2x-7
\n" ); document.write( " {y=-3\r
\n" ); document.write( "\n" ); document.write( "B.{y=2x-7
\n" ); document.write( " {y=0.5\r
\n" ); document.write( "\n" ); document.write( "C.{y=2x-7
\n" ); document.write( " {y=2\r
\n" ); document.write( "\n" ); document.write( "D.{y=2x-7
\n" ); document.write( " {y=12
\n" ); document.write( "

Algebra.Com's Answer #557043 by stanbon(75887)\"\" \"About 
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
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan h.
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