document.write( "Question 421830: -4x-2y=-8 y=-2x+4 \n" ); document.write( "
Algebra.Com's Answer #853221 by ikleyn(53339)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "        The conclusion and the answer in the post by @mananth both are incorrect.\r
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\n" ); document.write( "\n" ); document.write( "        His answer is  \" There is no solution to this system \".\r
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\n" ); document.write( "\n" ); document.write( "        The correct answer is  OPPOSITE :   there are infinitely many solutions to this system.\r
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document.write( "Indeed, the first equation can be equivalently transformed/re-written\r\n" );
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document.write( "    -4x - 2y = -8,\r\n" );
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document.write( "     4x + 2y = 8,\r\n" );
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document.write( "     2x + y = 4,\r\n" );
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document.write( "     y = -2x + 4.\r\n" );
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document.write( "Then you see that this transformed equation is IDENTICAL to the second equation.\r\n" );
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document.write( "Thus the system consists of two equivalent equation - such systems have infinitely many solutions.\r\n" );
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document.write( "You can take any value for 'x' and calculate the relevant value of 'y'.\r\n" );
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document.write( "Then the pair (x,y) will be solution for both equations,\r\n" );
document.write( "and doing this way, you get infinitely many solutions.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Again,  the answer in the post by @mananth is  INCORRECT.
\n" ); document.write( "The correct answer is  OPPOSITE.\r
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