document.write( "Question 315771: Write an equation of the line which passes through these points\r
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Algebra.Com's Answer #225920 by Edwin McCravy(20055)\"\" \"About 
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Write an equation of the line which passes through these points\r
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document.write( "Let's plot those two points:\r\n" );
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document.write( "As you see those two points are on the y-axis, so if we connect\r\n" );
document.write( "them, the line will coincide with the y-axis -- in fact the line \r\n" );
document.write( "IS the y-axis.  So we want the equation of the y-axis.  Look at \r\n" );
document.write( "a couple more points on that line, the y-axis, say (0,5) and (0,-7). \r\n" );
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document.write( "Notice that all those point have 0 for their x-coordinate.  Every point\r\n" );
document.write( "on the y-axis has its x-coordinate 0, so the way the equation is made\r\n" );
document.write( "is to state that fact in an equation about all the x-coordinates being\r\n" );
document.write( "0.  The equation that says that is:\r\n" );
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document.write( "     x = 0\r\n" );
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document.write( "That is the equation of the y-axis, because every point on the y-axis\r\n" );
document.write( "has its x coordinate as 0.\r\n" );
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document.write( "Edwin
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