# What are the domain and range of the function f (x) = 3x + 5?

The domain of a function is defined as the input values. The range is defined as the output values.

## Answer: The domain and the range of the function f (x) = 3x + 5 is (- ∞, ∞).

Let's find the domain and range of the function.

**Explanation:**

F (x) = y is the range of the function.

Since the real values of x are not restricted for the domain. The set of real Numbers is the domain of this function.

Therefore, the range of the function is also not restricted. The set of real numbers is the range of this function.

The graph below represents the values of domain and range of the function f (x) = 3x + 5.

This graph shows that the domain and range of the function are set for all real numbers.

⇒ f ( x ) : x → R { x : x ∈ R }