I need to know the Domain and Range of the following rational expressions/functions.

1. y = -10/x

2. y = (1)/(x+3) + 3

Also, I need to compare them with the graph of y=1/x

Thanks for the help!

### 1 Answer | Add Yours

You need to remember the definition of domain of function, hence, since, the domain contains the x inputs that make the function valid, you should notice that at `x = 0` , the function `y = -10/x` is not defined.

**Hence, evaluating the domain of the function yields that it contains all real numbers, except `x = 0.` **

The range of the function cotains the y outputs that come out when using equation of function `y = -10/x.`

**Hence, evaluating the range of the function yields that it contains all real numbers, except y = 0.**

### Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes