document.write( "Question 986845: how can i graph the piece wise function?\r
\n" ); document.write( "\n" ); document.write( "2x+3 if x>0
\n" ); document.write( "-x-1 if x≤0 \n" ); document.write( "

Algebra.Com's Answer #607640 by Edwin McCravy(20060) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "That's made of two functions\r\n" );
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document.write( "y = 2x+1 and y = -x-1\r\n" );
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document.write( "The cut off number is 0.\r\n" );
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document.write( "Pick two values of x greater than the cut-off number 0 \r\n" );
document.write( "and substitute them into\r\n" );
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document.write( "y = 2x+1\r\n" );
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document.write( " x |  y\r\n" );
document.write( " 1 |  3\r\n" );
document.write( " 2 |  5\r\n" );
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document.write( "Plot those two points and draw a line through them only to the \r\n" );
document.write( "RIGHT of the cut off point:\r\n" );
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document.write( "Pick two values of x less than the cut-off number 0 \r\n" );
document.write( "and substitute them into\r\n" );
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document.write( "y = -x-1\r\n" );
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document.write( " x |  y\r\n" );
document.write( "-2 |  1\r\n" );
document.write( "-3 |  2\r\n" );
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document.write( "Plot those two points and draw a line through them only to the \r\n" );
document.write( "LEFT of the cut off point 0.\r\n" );
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document.write( "Put an open circle at the end of the one that does not include \r\n" );
document.write( "0 and a closed circle at the end of the one that does include 0.\r\n" );
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document.write( "Edwin

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