Question

y^2/8y+9 find all numbers for which the rational expression is undefined

Answer 1

when the denominator is zero

Answer 2

It's undefined whenever the denominator, 8y + 9, equals 0. So set up an equation like this:

8y + 9 = 0

And solve for y.

@tsox

Answer 3

so my answer would be-9/8 is the number for which it is undefined corrrect?