Question

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

Answer 1

Domain and Range are valid for all real numbers.

Explanation:

Let's first see that the equation `y=3x+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`.