document.write( "Question 23145: Graphing whew!? Question for you. Thanks for your assistance.\r
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document.write( "1. Is (-2,6) a solution to 7x+3y=4 AND 8x+7y=26?\r
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document.write( "2. Solve the system of equations by graphing. If the system is inconsistant or the equations are dependent, state that.\r
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document.write( "y=2x+1
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document.write( "y=-2x-3 \n" );
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Algebra.Com's Answer #11629 by venugopalramana(3286) You can put this solution on YOUR website! 1. Is (-2,6) a solution to 7x+3y=4 AND 8x+7y=26?\r \n" ); document.write( "\n" ); document.write( "THAT IS WE HAVE TO CHECK IF BY PUTTING X AND Y THE GIVEN VALUES , THE EQUATION IS SATISFIED...MEANS ...L.H.S=R.H.S. OR NOT \n" ); document.write( "X=-2...Y=6...IN 7X+3Y=4 \n" ); document.write( "L.H.S.=7X+3Y=7*-2+3*6=-14+18=4...R.H.S.=4..HENCE LHS=RHS...SO (-2,6) IS A SOLUTION OF EQN.7X+3Y=4 \n" ); document.write( "---------------------------------------- \n" ); document.write( "X=-2...Y=6...IN 8X+7Y=26 \n" ); document.write( "L.H.S.=8*-2+7*6=-16+42=26......R.H.S=26....HENCE LHS=RHS...SO (-2,6) IS A SOLUTION OF EQN.8X+7Y=26 \n" ); document.write( "---------------------------------------------------------\r \n" ); document.write( "\n" ); document.write( "2. Solve the system of equations by graphing. If the system is inconsistant or the equations are dependent, state that.\r \n" ); document.write( "\n" ); document.write( "y=2x+1 \n" ); document.write( "y=-2x-3\r \n" ); document.write( "\n" ); document.write( "TAKE DIFFERENT VALUES FOR X AND FIND CORRESPONDING VALUES OF Y AND TABULATE AS FOLLOWS AND GRAPH TO A SUITABLE SCALE...... \n" ); document.write( "X........0...........1............2..........-2............-3...........ETC... \n" ); document.write( "Y=2X+1...1...........3............5...........-3...........-5............. \n" ); document.write( "Y=-2X-3..-3..........-5...........-7...........1...........3..............\r \n" ); document.write( "\n" ); document.write( "THE GRAPH WILL LOOK LIKE THIS .. \n" ); document.write( " \n" ); document.write( "WE FIND THE 2 GRAPHS ARE STRAIGHT LINES INTERSECTING AT X=-1 AND Y=-1...SO X=-1 AND Y=-1 IS THE SOLUTION SET FOR THSES 2 EQNS.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |