document.write( "Question 530837: find all numbers for which the rational expression is undefined. -17/7y \n" ); document.write( "
Algebra.Com's Answer #350211 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
You cannot divide by zero. \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So if the denominator 7y were zero, then y = 0\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So y = 0 makes the denominator 0\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Therefore, y = 0 makes the expression undefined.
\n" ); document.write( "
\n" );