document.write( "Question 150538: I was wondering if someone could explain how to shade linear equalities when you graph them. I know how to graph, I'm just confused on where to shade.
\n" ); document.write( "3y + x > 4
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Algebra.Com's Answer #110501 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "\"3y%2Bx%3E4\" Start with the given inequality.\r
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\n" ); document.write( "\n" ); document.write( "\"3y%3E4-x\" Subtract \"x\" from both sides.\r
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\n" ); document.write( "\n" ); document.write( "\"y%3E%284-x%29%2F%283%29\" Divide both sides by \"3\" to isolate \"y\".\r
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\n" ); document.write( "\n" ); document.write( "\"y%3E%284%29%2F3-%28x%29%2F%283%29\" Break up the fraction.\r
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\n" ); document.write( "\n" ); document.write( "\"y%3E-%281%2F3%29x%2B4%2F3\" Rearrange the terms.\r
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\n" ); document.write( "\n" ); document.write( "So in order to plot \"3y%2Bx%3E4\" or \"y%3E-%281%2F3%29x%2B4%2F3\" (which is the same thing), we need to plot the equation \"y=-%281%2F3%29x%2B4%2F3\" first. \r
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\n" ); document.write( "\n" ); document.write( "\"+graph%28+500%2C+500%2C+-10%2C+10%2C+-10%2C+10%2C-%281%2F3%29x%2B4%2F3%29+\" Graph of \"y=-%281%2F3%29x%2B4%2F3\"\r
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\n" ); document.write( "\n" ); document.write( "Now plug in a test point (0,0) into the inequality \"y%3E-%281%2F3%29x%2B4%2F3\"\r
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\n" ); document.write( "\n" ); document.write( "\"y%3E-%281%2F3%29x%2B4%2F3\" Start with the given inequality.\r
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\n" ); document.write( "\n" ); document.write( "\"0%3E-%281%2F3%29%2A%280%29%2B4%2F3\" Plug in \"x=0\" and \"y=0\"\r
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\n" ); document.write( "\n" ); document.write( "\"0%3E4%2F3\" Evaluate and simplify.\r
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\n" ); document.write( "\n" ); document.write( "Since the inequality is false, this means that we shade the entire region that does NOT contain the point (0,0)\r
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\n" ); document.write( "\n" ); document.write( "In other words, we simply shade the entire region that is above the line.\r
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\n" ); document.write( "\n" ); document.write( " Graph of \"y%3E-%281%2F3%29x%2B4%2F3\" (which is also \"3y%2Bx%3E4\" )with the shaded region in green\r
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\n" ); document.write( "\n" ); document.write( "Note: Since the inequality has a greater than sign \">\", this means that the red boundary line should be dotted since we are not including this line with the solution set.
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