document.write( "Question 1130988: Can you explain how 9x-7y=-7. Comes out to X=1. Y = 16/7?
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Algebra.Com's Answer #747583 by Edwin McCravy(20055) $\"\"$ $\"About$

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document.write( "9x-7y=-7 doesn't do anything called \"come out x=1. y=16/7'.\r\n" );
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document.write( "You see, 9x-7y=-7 is ALGEBRA for this graphed line of GEOMETRY,\r\n" );
document.write( "and the only thing that can be said about \"x=1 and \"y=16/7\" is\r\n" );
document.write( "that if you substitute 1 for x in 9x-7y=-7 you will get y = 16/7.\r\n" );
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document.write( "   9x - 7y = -7\r\n" );
document.write( " 9(1) - 7y = -7\r\n" );
document.write( "    9 - 7y = -7\r\n" );
document.write( "   -9        -9\r\n" );
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document.write( "       -7y = -16\r\n" );
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document.write( "         y =  \r\n" );
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document.write( "And what that means is that the point (1, 16/7) is one of the \r\n" );
document.write( "points on the line which has 1 as its x coordinate and 16/7 as \r\n" );
document.write( "its y-coordinate:\r\n" );
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document.write( "Edwin

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