document.write( "Question 278354: find an equation for the line
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Algebra.Com's Answer #202539 by Edwin McCravy(20055) $\"\"$ $\"About$

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find an equation for the line
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document.write( "Let's plot that point and draw that 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 -7.  So the equation is\r\n" );
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document.write( "\"the line every point of which has x-coordinate = -7\"\r\n" );
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document.write( "or writing that sentence much shorter, we have\r\n" );
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document.write( "x = -7\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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