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document.write( "Since the point (-1,-3) is 3 units from the x-axis,\r\n" );
document.write( "and since we know that 3-4-5 right triangles have \r\n" );
document.write( "a hypotenuse which is 5 units long, we draw two \r\n" );
document.write( "3-4-5 right triangles by using the vertical 3-unit \r\n" );
document.write( "line as the vertical side and draw the horizontal \r\n" );
document.write( "side 4 units long, like these two cases:\r\n" );
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document.write( "Answer: (3,0) and (-5,0)\r\n" );
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document.write( "Edwin
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