document.write( "Question 720966: how do you write piecewise functions?
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Algebra.Com's Answer #442110 by Edwin McCravy(20060) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "The graph of y=2x+1 is the red line.\r\n" );
document.write( "It is drawn solid to the right of where x=1\r\n" );
document.write( "The graph of y=-3 is the green line\r\n" );
document.write( "It is drawn solid to the left of where x=1.\r\n" );
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document.write( "We erase the dotted parts:\r\n" );
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document.write( "The red line includes the endpoint (1,3), so we place\r\n" );
document.write( "a darkened circle at (1,3).  The green line does not\r\n" );
document.write( "include the endpoint (1,-2.5) so we draw an open circle\r\n" );
document.write( "there:\r\n" );
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document.write( "  Edwin

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