Question

Find the Nonpermissible replacement for y in this expression y-7/y+9

Answer 1

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

Y+9/Y+7
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.

Answer 2

y cannot be -9

Explanation:

The other word is discontinuity

It is what y cannot be

The denominator cannot be zero so

y+9 cannot be zero

y cannot be -9