document.write( "Question 699371: Function or Not a Function \r
\n" ); document.write( "\n" ); document.write( "{(-2,-7),(3,-5),(6,-4),(9,-6),(10,-1)}
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #431334 by MathHard(1)\"\" \"About 
You can put this solution on YOUR website!
It is A function because each 'x' ,or domain, has a 1 'y', or range. If the -2(x) had another y, then that wouldnt be a function.
\n" ); document.write( "
\n" ); document.write( "
\n" );