document.write( "Question 196166: what is the solution to this system of equations
\n" ); document.write( "y=-3x-2
\n" ); document.write( "6x+2y=-4 \n" ); document.write( "
Algebra.Com's Answer #147073 by RAY100(1637)\"\" \"About 
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(1) y = -3x -2
\n" ); document.write( "(2) 6x +2y =-4
\n" ); document.write( "substitute (1) into (2)
\n" ); document.write( "6x +2(-3x-2) = -4
\n" ); document.write( "6x -6x -4 = -4
\n" ); document.write( "-4 = -4
\n" ); document.write( ",
\n" ); document.write( "This is an indication that the solution is all real numbers
\n" ); document.write( "and that the lines are coincident
\n" ); document.write( ".
\n" ); document.write( "looking at (1),, if we multiply by 2 throughout and rearrange it is the same as (2)
\n" ); document.write( ".
\n" ); document.write( "y = -3x -2
\n" ); document.write( "2y =-6x -4
\n" ); document.write( "or 6x +2y = -4, and (1) =(2) exactly
\n" ); document.write( ".
\n" ); document.write( "the lines are on top of each other
\n" ); document.write( "Some of the answers that fit include, (0 -2), (1, -5), (2, -8) \n" ); document.write( "
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