document.write( "Question 390641: Does the following set of ordered pairs express the first variable as a function of the second variable? {(2, -4)(-2, 0)(2, 2)(-2, 4)(3, -2)(-3, -2)} \n" ); document.write( "
Algebra.Com's Answer #277074 by Edwin McCravy(20059)\"\" \"About 
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document.write( "No it does not express the first variable as a function of the second variable\r\n" );
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document.write( "{(2, -4)(-2, 0)(2, 2)(-2, 4)(3, -2)(-3, -2)}\r\n" );
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document.write( "Note the two blue {(2's are both first coordinates.  A function cannot\r\n" );
document.write( "use the same first coordinate twice.\r\n" );
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document.write( "Note the two red {(-2's are both first coordinates.  A function cannot\r\n" );
document.write( "use the same first coordinate twice.\r\n" );
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document.write( "So there are two pairs of ordered pairs that keep this from being a \r\n" );
document.write( "function.\r\n" );
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document.write( "Edwin
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