document.write( "Question 984089: How do you graph this inequality?:\r
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document.write( "11 < 4x+3y < 15\r
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document.write( "( the \"<\"'s are supposed to have a line under them)\r
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document.write( "-Thank you.\r
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Algebra.Com's Answer #604859 by macston(5194)![]() ![]() You can put this solution on YOUR website! .\r \n" ); document.write( "\n" ); document.write( "11 < 4x+3y < 15 \n" ); document.write( "Graph the line: \n" ); document.write( "11=4x+3y (See red line on graph.) \n" ); document.write( "Graph the line: \n" ); document.write( "4x+3y=15 (See green line on graph) \n" ); document.write( ". \n" ); document.write( "Test to see which interval(s) is true: \n" ); document.write( ". \n" ); document.write( "Test point (1,1) in lower left: \n" ); document.write( "11<4(1)+3(1)<15 \n" ); document.write( "11<7<15 False, 11 is not less than 7 \n" ); document.write( ". \n" ); document.write( "Test point (3,3) in upper right: \n" ); document.write( "11<4(3)+3(3)<15 \n" ); document.write( "11<21<15 False, 21 is not less than 15. \n" ); document.write( ". \n" ); document.write( "Test point (2,2) between the lines: \n" ); document.write( "11<4(2)+3(2)<15 \n" ); document.write( "11<14<15 True, so the area between the lines is included. \n" ); document.write( ". \n" ); document.write( "Graph the two lines (use a solid line since the \"equal\" is included. Without the equal, these lines would be dotted). SHADE THE AREA BETWEEN THE LINES (Not shown on graph below)\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " |