document.write( "Question 544675: I need help graphing the following equations:
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document.write( "2x+5y=12
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document.write( "4x+3y=2
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document.write( "3x-2y=10
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document.write( "If you could help me graph the first one, I am sure I could figure out the rest.\r
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document.write( "Thank you,
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document.write( "Emily \n" );
document.write( "
Algebra.Com's Answer #355454 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! In order plot a graph, we want the equation in the slope/intercept form, y = mx + b \n" ); document.write( ": \n" ); document.write( "2x + 5y = 12 \n" ); document.write( "5y = -2x + 12 \n" ); document.write( "divide both sides by 5 \n" ); document.write( "y = \n" ); document.write( "this will work OK using decimals \n" ); document.write( "y = -.4x + 2.4 \n" ); document.write( ": \n" ); document.write( "Choose a couple values for x and find y: \n" ); document.write( "x = -3 \n" ); document.write( "y = -.4(-3) + 2.4 \n" ); document.write( "y = +1.2 + 2.4 \n" ); document.write( "y = 3.6 \n" ); document.write( ": \n" ); document.write( "x = +3 \n" ); document.write( "y = -.4(3) + 2.4 \n" ); document.write( "y = -1.2 + 2.4 \n" ); document.write( "y = + 1.2 \n" ); document.write( ": \n" ); document.write( " x | y \n" ); document.write( "-------- \n" ); document.write( "-3 | 3.6 \n" ); document.write( "+3 | 1.2 \n" ); document.write( "Should look like this \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |