Find the nonpermissible replacement for y in
this expression.
y +9
y+7

y = -9 is the non permissible replacement for y in this expression  

Step-by-step explanation:

if y = -7

You cannot divide by 0.  If y = -7, the denominator would be 0.

zero in the denominator is NOT allowed.

y = -9 is the non permissible replacement for y in this expression