# What is the domain and range of y = 3x+6?

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#### Explanation

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Mar 23, 2018

$\text{dom: } x \in \mathbb{R}$
$\text{ran: } y \in \mathbb{R}$

#### Explanation:

• The domain is defined as the set of all the possible x-values that can be input into the function.
• The range is defined as the set of all the possible y-values that can be input into the function.

Linear functions generally have a domain and range of $\mathbb{R}$ (all real values). Unless there is a restriction of the domain of the linear function, the domain and range of $y$ will be $\mathbb{R}$.

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