document.write( "Question 68084: Graph the inequality
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document.write( "3x + y less than or equal to 5\r
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document.write( "I am confussed and not sure how to graph this equation. Thanks \n" );
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Algebra.Com's Answer #48447 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Graph the inequality \n" ); document.write( "3x + y less than or equal to 5 \n" ); document.write( "------------------ \n" ); document.write( "y<=-3x+5 \n" ); document.write( "Graph the EQUALITY: y=-3x+5 \n" ); document.write( "You need two points: \n" ); document.write( "If x=0, y=5, giving you point (0,5) \n" ); document.write( "If x=1, y=2, giving you point (1,2) \n" ); document.write( "Plot those two points and draw a line thru them. \n" ); document.write( "------------------ \n" ); document.write( "Graph the INEQUALITY: y<-3x+5 \n" ); document.write( "Pick a test point on either side of the line you graphed \n" ); document.write( "to see if the side the point is on is the graph of the inequality. \n" ); document.write( "Pick (0,0) \n" ); document.write( "Substitute that into y<-3x+5 \n" ); document.write( "You get 0<0+5 \n" ); document.write( "That is true; so the side of the EQUALITY line that contains \n" ); document.write( "(0,0) is the graph of the INEQUALITY. \n" ); document.write( " \n" ); document.write( "cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |