\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Get a table of values for the first equation:\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "Let x=0 Let y=0 Let y=-1 \r\n" );
document.write( "
\r\n" );
document.write( "
\r\n" );
document.write( "
\r\n" );
document.write( "point (0,1) point (-4,0) point (-8,-1) \r\n" );
document.write( "\r\n" );
document.write( "Plot those three points and draw a line through them\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "The other equation contains fractions, so it will be\r\n" );
document.write( "easier if we first multiply every term in it through by the\r\n" );
document.write( "LCD of 3:\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "Let x=0 Let y=-1 Let x=-2\r\n" );
document.write( "
\r\n" );
document.write( "
\r\n" );
document.write( "
\r\n" );
document.write( "
\r\n" );
document.write( "point (0,-4) point (2,-1) point (-2,-7) \r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Now notice the point where the two lines cross. From\r\n" );
document.write( "that point draw a vertical line directly down to the \r\n" );
document.write( "x-axis, and a horizontal line over to the y-axis like \r\n" );
document.write( "this:\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "We see that the vertical line hits the x-axis at 4.\r\n" );
document.write( "That means x=4 is the answer for x.\r\n" );
document.write( "\r\n" );
document.write( "We see that the horizontal line hits the y-axis at 2.\r\n" );
document.write( "That means y=2 is the answer for y.\r\n" );
document.write( "\r\n" );
document.write( "Solution: x=4, y=2.\r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" );
document.write( "