# What is the domain and range of f(x) = 3x + 1?

Domain: $- \infty < \text{x} < + \infty$
Range: $- \infty < \text{f(x)} < + \infty$

#### Explanation:

This is a linear function. A linear function extends from $- \infty$ to $+ \infty$, so that all values of x is allowed and the value of f(x) also includes the set of all real numbers. For any real value of x, there corresponds a unique real value of f(x).

Kindly see the graph of $f \left(x\right) = 3 x + 1$

graph{y=3x+1[-20,20,-10,10]}

God bless....I hope the explanation is useful.