document.write( "Question 288617: Which ordered pair makes the relation (2,1), (3,2), (-1,5) not a function?\r
\n" ); document.write( "\n" ); document.write( "a. (3,2)
\n" ); document.write( "b. (-2,1)
\n" ); document.write( "c. (1,4)
\n" ); document.write( "d. (-1,4)
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Algebra.Com's Answer #209193 by richwmiller(17219)\"\" \"About 
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The key to this is the definition of function. \n" ); document.write( "
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