In the expression, 1/(y+6), why can't y equal 0,3,-6, or -3?

Aug 2012
23
0
Missouri City, Texas
I understand that y can't equal -6 because it will make the denominator 0, but why the other numbers?
 
Jun 2012
616
115
AZ
y could equal any of the other numbers...who told you otherwise?
 

Plato

MHF Helper
Aug 2006
22,491
8,653
I understand that y can't equal -6 because it will make the denominator 0, but why the other numbers?
You need to post the entire question. The part you quoted makes little sense as is.