document.write( "Question 66904This question is from textbook Beginning Algebra
\n" ); document.write( ": Graph the following inequalities: 3x - 4y < 12.\r
\n" ); document.write( "\n" ); document.write( "Any help with solving and graphing this equation would be greatly appreciated. Thanks.
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Algebra.Com's Answer #47576 by ankor@dixie-net.com(22740)\"\" \"About 
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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.
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\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( "\"+graph%28+300%2C+200%2C+-10%2C+10%2C+-10%2C+6%2C+.75x-3%29+\"
\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.
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