document.write( "Question 56680: solve by graphing.
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document.write( "x-y=2
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document.write( "3x-3y=6 \n" );
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Algebra.Com's Answer #38461 by funmath(2933)![]() ![]() ![]() You can put this solution on YOUR website! solve by graphing. \n" ); document.write( "L1) x-y=2 \n" ); document.write( "L2) 3x-3y=6 \n" ); document.write( ": \n" ); document.write( "For L1) \n" ); document.write( "Let x=0 and solve for y, this is your y-intercept: \n" ); document.write( "0-y=2 \n" ); document.write( "-y=2 \n" ); document.write( "-(-y)=-(2) \n" ); document.write( "y=-2 \n" ); document.write( "Plot (0,-2) \n" ); document.write( "Let y=0 and solve for x, this is your x-intercept: \n" ); document.write( "x-(0)=2 \n" ); document.write( "x=2 \n" ); document.write( "Plot (2,0) \n" ); document.write( "Connect the dots and you have a line that looks like: \n" ); document.write( " \n" ); document.write( "For L2) \n" ); document.write( "Let x=0 and solve for y, this is your y-intercept of this line: \n" ); document.write( "3(0)-3y=6 \n" ); document.write( "-3y=6 \n" ); document.write( "-3y/3=6/-3 \n" ); document.write( "y=-2 \n" ); document.write( "Plot (0,-2) Notice that is the same y intercept that L1) had: \n" ); document.write( "Let y=0 and solve for x, this is your x-intercept: \n" ); document.write( "3x-3(0)=6 \n" ); document.write( "3x=6 \n" ); document.write( "3x/3=6/3 \n" ); document.write( "x=2 \n" ); document.write( "Plot (2,0) Notice that is the same x-intercept that L1 had. L1 is lying right ontop of L2, in other words they graphically are the same line. The solution is all real numbers: \n" ); document.write( " \n" ); document.write( "Happy Calculating!!! \n" ); document.write( " \n" ); document.write( " |