document.write( "Question 68533: Is this a function?\r
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Algebra.Com's Answer #48788 by Edwin McCravy(20059) $\"\"$ $\"About$

You can put this solution on YOUR website!

Is this a function?:\r\n" );
document.write( "f(x) = 2 if x > 1\r\n" );
document.write( "f(x) = -1 otherwise\r\n" );
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document.write( "Let's graph it and see:\r\n" );
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document.write( "It passes the vertical line test. That is,\r\n" );
document.write( "no point on the graph is directly above or \r\n" );
document.write( "directly below any other point on the graph.\r\n" );
document.write( "So it is a function.\r\n" );
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document.write( "Edwin

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