Respuesta :

Answer:

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

Step-by-step explanation:

[tex]\frac{y +9}{y+7}[/tex]

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