What is the domain of this rational function f(x)= (3x-8 )/(4x+20)

Question

What is the domain of this rational function f(x)=  (3x-8 )/(4x+20)

directrix · Answer

The domain is the set of admissible values of x. In a rational function, the first thing to do is to see if there is a value of x that makes the entire denominator have a value of zero. If there is one that does that, it must be excluded from the domain because division by zero is undefined?

Do you see such a value of x?

anonymous · Answer

I got it thank you (-y)/((4x^4)) is my answer.

directrix · Answer

@rannsan --> Whatever you wrote above is not the answer to the question.
The question you posted has to do with domain.
-->
What is the domain of this rational function?

anonymous · Answer

now I am confused

directrix · Answer

(-y)/((4x^4)) is the answer to a simplify question I just saw that you posted in another thread.

Forget about that and look at the question you posted in this thread.

directrix · Answer

I think you have this question here: http://openstudy.com/study#/updates/50652851e4b08d185211dad2 mixed up with the question about the domain.