document.write( "Question 66904This question is from textbook Beginning Algebra
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document.write( ": Graph the following inequalities: 3x - 4y < 12.\r
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document.write( "Any help with solving and graphing this equation would be greatly appreciated. Thanks. \n" );
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Algebra.Com's Answer #47576 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Graph the following inequalities: 3x - 4y < 12. \n" ); document.write( ": \n" ); document.write( "3x - 4y < 12 \n" ); document.write( ": \n" ); document.write( "Put it in the general\"y=\" form: \n" ); document.write( "-4y < 12 - 3x \n" ); document.write( "We need y to be positive, multiply equation by -1, when you do this, you have to \n" ); document.write( "reverse the inequality sign: \n" ); document.write( "+4y > +3x - 12 \n" ); document.write( "y > (3/4x) - 12/4 \n" ); document.write( "y > .75x - 3, use decimals for convenience here. \n" ); document.write( ": \n" ); document.write( "Substitute these values for x and find y: \n" ); document.write( "I chose a range of -4 to +8 \n" ); document.write( ": \n" ); document.write( "x = -4, substitute -4 for x in the equation: \n" ); document.write( "y = .75(-4) - 3 \n" ); document.write( "y = -3 - 3 \n" ); document.write( "y = -6 \n" ); document.write( ": \n" ); document.write( "x = 0, do the same here \n" ); document.write( "y = .75(0)- 3 \n" ); document.write( "y = 3 \n" ); document.write( ": \n" ); document.write( "x = +8, and here \n" ); document.write( "y = .75(8) - 3 \n" ); document.write( "y = 6 - 3 \n" ); document.write( "y = + 3 \n" ); document.write( ": \n" ); document.write( "A table would look like: \n" ); document.write( "x | y \n" ); document.write( "----- \n" ); document.write( "-4|-6 \n" ); document.write( " 0|-3 \n" ); document.write( "+8| 3 \n" ); document.write( ": \n" ); document.write( "Choose a convenient scale that will contained these coordinates, plot them. \n" ); document.write( "Your graph should look like this: \n" ); document.write( " \n" ); document.write( ": \n" ); document.write( "Remember our equation: y > .75x - 3, the \"greater than\" means the area is above \n" ); document.write( "but not at the line. \n" ); document.write( " |