# How do you find the domain and range of y = 3x + 10?

Domain and Range are valid for all real numbers.

#### Explanation:

Let's first see that the equation $y = 3 x + 10$ describes a line:

graph{3x+10 [-32.47, 32.48, -16.24, 16.23]}

The domain refers to the list of allowable $x$ values. For this equation, all $x$ values are allowed, and so we can say the domain is valid for all real numbers.

The range refers to the list of all resulting $y$ values. Just as all values of $x$ are valid, so too are all values of $y$.