document.write( "Question 50149: Could I get some help with graphing this equation: 2x + y = -8? Thank You \n" ); document.write( "

Algebra.Com's Answer #33330 by AnlytcPhil(1806) $\"\"$ $\"About$

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Could I get some help with graphing this equation: 2x + y = -8? \r\n" );
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document.write( "1.  Find the x-coordinate of the x-intercept by substituting 0 for y and\r\n" );
document.write( "    solving for x.  The y-coordinate of the x-intercept is 0.\r\n" );
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document.write( "    2x + y = -8\r\n" );
document.write( "    2x + 0 = -8\r\n" );
document.write( "        2x = -8\r\n" );
document.write( "         x = -8/2\r\n" );
document.write( "         x = -4\r\n" );
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document.write( "    So the x-intercept is (-4,0)\r\n" );
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document.write( "2.  Find the y-coordinate of the y-intercept by substituting 0 for x and\r\n" );
document.write( "    solving for y.  The x-coordinate of the y-intercept is 0.\r\n" );
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document.write( "    2x + y = -8\r\n" );
document.write( "    2(0) + y = -8\r\n" );
document.write( "       0 + y = -8\r\n" );
document.write( "           y = -8\r\n" );
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document.write( "    So the x-intercept is (0,-8)\r\n" );
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document.write( "3. Plot these two points (-4,0) is on the x-axis 4 units left of the\r\n" );
document.write( "   origin and (0,-8) is on the y-axis 8 units below the origin. \r\n" );
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document.write( "Then draw a line through those two points:\r\n" );
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document.write( "          \r\n" );
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document.write( "Edwin

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