document.write( "Question 63071: 
This function y = x² - 4x - 5 has been put into 'standard form' \r\n" );
document.write( "y =(x-2)² - 9.\r\n" );
document.write( "For the function, what would be the equation of the line of symmetry \r\n" );
document.write( "for the graph of this function?
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Algebra.Com's Answer #43878 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
This function y = x² - 4x - 5 has been put into 'standard form' \r\n" );
document.write( "y =(x-2)² - 9.\r\n" );
document.write( "For the function, what would be the equation of the line of symmetry \r\n" );
document.write( "for the graph of this function?\r\n" );
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document.write( "The line of symmetry is the line that bisects \r\n" );
document.write( "the graph of the equation, which is a parabola.\r\n" );
document.write( "Here is the graph of the parabola of your \r\n" );
document.write( "problem, and the green line in its axis of \r\n" );
document.write( "symmetry:\r\n" );
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document.write( " \"+graph%28+300%2C+300%2C+-10%2C+10%2C+-10%2C+10%2C+x%5E2-4x-5%2C+999%28x-2%29%29+\"\r\n" );
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document.write( "Look at some of the points on that green line:\r\n" );
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document.write( "(2,0) is a point on that green line.\r\n" );
document.write( "(2,2) is a point on that green line.\r\n" );
document.write( "(2,-2) is a point on that green line.\r\n" );
document.write( "(2,4) is a point on that green line.\r\n" );
document.write( "(2,-6) is a point on that green line.\r\n" );
document.write( "(2,8) is a point on that green line.\r\n" );
document.write( "(2,-10) is a point on that green line.\r\n" );
document.write( "(2,6) is a point on that green line.\r\n" );
document.write( "(2,100) is a point on that line, or it would \r\n" );
document.write( "be if we drew the graph big enough.\r\n" );
document.write( "(2,-100) is a point on that line, or it would \r\n" );
document.write( "be if we drew the graph big enough.\r\n" );
document.write( "(2,100000000) is a point on that line, or it \r\n" );
document.write( "would be if we could draw the graph big \r\n" );
document.write( "enough.\r\n" );
document.write( "(2, anything) is a point on that green line.\r\n" );
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document.write( "What do all those points on that green line \r\n" );
document.write( "have in common?  Answer: Every one of their \r\n" );
document.write( "x-coordinates is 2.  Therefore all you have \r\n" );
document.write( "to do to write the equation of that green \r\n" );
document.write( "line is to say what is true about every point \r\n" );
document.write( "on that line, and that is:\r\n" );
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document.write( "Every point has the x value of 2\r\n" );
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document.write( "     which is the same as saying\r\n" );
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document.write( "All x-values on that line are equal to 2.\r\n" );
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document.write( "     which is the same as saying\r\n" );
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document.write( "x is always equal to 2\r\n" );
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document.write( "     which is the same as saying \r\n" );
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document.write( "x = 2\r\n" );
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document.write( "That's the equation of that green vertical line\r\n" );
document.write( "that bisects the parabola of the graph of your\r\n" );
document.write( "given equation. And that green line is the axis \r\n" );
document.write( "of symmetry of the parabola.  Its equation is\r\n" );
document.write( "simply\r\n" );
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document.write( "        x = 2 \r\n" );
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document.write( "Edwin
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