Question

find the non permissible replacement for y in this expression y-3 / y+7

Answer 1

Denominator can't be 0

so set the denominator equal to 0 and solve

Answer 2

i dont understand at all

Answer 3

If the denominator is 0, then we'll get something over 0

and that means the function will be undefined when the denominator equals 0

x/0 = undefined

0/x = 0