Find the domain of the reciprocal function

The video tutorial explains how to identify the domain of a function, particularly when variables are in the denominator. It covers setting the denominator equal to zero to find constraints, using a number line to graphically represent the domain, and expressing the domain using inequalities and interval notation.

What is the first step in identifying the domain of a function?

Why can a variable in the denominator not equal zero?

How do you represent a number that is not included in the domain on a number line?

Explain how to write the domain as an inequality.

What does the interval notation look like for the domain excluding -3?