document.write( "Question 279358: find an equation of the line through (-2, -3) with no slope. \n" ); document.write( "
Algebra.Com's Answer #203201 by Edwin McCravy(20086)\"\" \"About 
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ffind an equation of the line through (-2, -3) with no slope.
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document.write( "The only kind of lines which have no slope are vertical lines.\r\n" );
document.write( "They do not have slopes, but they do have equations. In fact\r\n" );
document.write( "their equations are very simple.\r\n" );
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document.write( "Let's plot that point and draw the vertical line through it: \r\n" );
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document.write( "Let's look at some more points on that vertical line\r\n" );
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document.write( "What do you notice about all those points?  You notice that they\r\n" );
document.write( "all have the same x-coordinate, which is -2.  So the equation is\r\n" );
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document.write( "\"the line every point of which has the same x-coordinate = -2\"\r\n" );
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document.write( "or writing that sentence much shorter, we have\r\n" );
document.write( "x = -2\r\n" );
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document.write( "That is the equation of that vertical line.  You just write\r\n" );
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document.write( "what x (the x-coordinate) is always equal to on that line.\r\n" );
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document.write( "Edwin
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