\r\n" );
document.write( "
\r\n" );
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document.write( "Draw the graphs of\r\n" );
document.write( "\r\n" );
document.write( "
,
and
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
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document.write( "Draw vertical lines at the cut-off places -3, 3, 9, and 11\r\n" );
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document.write( "
,
and
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Erase the graph of y=1 (the red one) everywhere except between x=-3 and 3, the first two vertical lines.\r\n" );
document.write( "\r\n" );
document.write( "Erase the graph of y=|x| (the green one) everywhere except between x=3 and 9, the next two vertical lines.\r\n" );
document.write( "\r\n" );
document.write( "Erase the graph of y=√x (the blue one) everywhere except between x=9 and 11, the last two vertical lines.\r\n" );
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document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Erase the vertical cut-off lines, and put darkened or open circles at the\r\n" );
document.write( "end points of each piece of the graph to indicate whether they are included or not:\r\n" );
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document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" );
document.write( "