document.write( "Question 621545: Write equations for the horizontal and vertical lines passing through the point 9,8 \n" ); document.write( "
Algebra.Com's Answer #390802 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Here's a picture of the horizontal line (in green) passing through\r\n" );
document.write( "the point (9,8)\r\n" );
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document.write( "Look at a bunch of other points on that same horizontal line:\r\n" );
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document.write( "What do all those points have in common besides the fact\r\n" );
document.write( "that they are all on that same green horizontal line?\r\n" );
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document.write( "Answer:  They all have their SECOND coordinate as 8.\r\n" );
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document.write( "And what letter is used for the SECOND coordinate? x or y?\r\n" );
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document.write( "Answer:  y\r\n" );
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document.write( "So the one equation that describes that green horizontal line and no\r\n" );
document.write( "other line ia:\r\n" );
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document.write( "      y = 8\r\n" );
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document.write( "That's the equation.  What could be simpler?\r\n" );
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document.write( "Now here's a picture of the vertical line passing through (9,8)\r\n" );
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document.write( "Look at a bunch of other points on that same vertical line:\r\n" );
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document.write( "What do all those points have in common besides the fact\r\n" );
document.write( "that they are all on that same green vertical line?\r\n" );
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document.write( "Answer:  They all have their FIRST coordinate as 9.\r\n" );
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document.write( "And what letter is used for the first coordinate? x or y?\r\n" );
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document.write( "Answer:  x\r\n" );
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document.write( "So the one equation that describes that green vertical line and no\r\n" );
document.write( "other line is:\r\n" );
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document.write( "      x = 9\r\n" );
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document.write( "That's the equation.  What could be simpler?\r\n" );
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document.write( "Edwin

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