document.write( "Question 45556: I'm lost.. Solve the system by graphing :( \r
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Algebra.Com's Answer #30276 by prabhjyot(165)![]() ![]() ![]() You can put this solution on YOUR website! 1x-2y = 8 \n" ); document.write( " 3x-2y = 12\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Using Substitution Method.\r \n" ); document.write( "\n" ); document.write( "Expressing x as a function of y (from the first equation) x = (8 +2y)/1\r \n" ); document.write( "\n" ); document.write( "Substituting this expression into the second equation:\r \n" ); document.write( "\n" ); document.write( " 3(8-2y)/1-2y = 12\r \n" ); document.write( "\n" ); document.write( "Simplifying this expression:\r \n" ); document.write( "\n" ); document.write( " 4y = -12\r \n" ); document.write( "\n" ); document.write( "or\r \n" ); document.write( "\n" ); document.write( " y = -3\r \n" ); document.write( "\n" ); document.write( " Now, substituting y = -3 back into the x expressed as a function of y:\r \n" ); document.write( "\n" ); document.write( " x = (8+2y)/1 = 2\r \n" ); document.write( "\n" ); document.write( " ![]() |