Answer
horizontal
Work Step by Step
RECALL:
The graph of an equation of the form $y=k$ is a horizontal line.
The given equation, $y=3$, has $k=3$.
Thus, the graph of this equation is a horizontal line.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.