![\"\"](\"/images/stars/stars-13.gif\")
You can put this solution on YOUR website!
give an example of 4 ordered pairs that does not model a function. The domain will be any four integers between 0 and +10. The range will be any four integers between -1 and +. Why does this not model a function
\n" ); document.write( "
\r\n" );
document.write( "You didn't tell us what the largest number in the range can be. You just have\r\n" );
document.write( "a + sign there. I'll assume it's at least 3.\r\n" );
document.write( "\r\n" );
document.write( "{(0,1), (7,3), (2,1), (7,2)}\r\n" );
document.write( "\r\n" );
document.write( "That's not a function because no two different ordered pairs in \r\n" );
document.write( "a function can have the same first coordinate, and (7,3) and (7,2)\r\n" );
document.write( "have the same first coordinate 7.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "-----------------------------------------\r\n" );
document.write( "\r\n" );
document.write( "[Note: two different ordered pairs in a function CAN have the same SECOND\r\n" );
document.write( "coordinate, like (0,1) and (2,1) have the same second coordinate. They\r\n" );
document.write( "are not the reason the above is not a function. (7,3) and (7,2) are the\r\n" );
document.write( "only reason it's not a function. In a function, the y's can occur twice, \r\n" );
document.write( "but the x's can't!]\r\n" );
document.write( "\r\n" );
document.write( "Edwin \n" );
document.write( "