Answer
See graph.
Work Step by Step
As the slope is undefined, it is a vertical line in the form of $x=a$, given point $P(0,3$, we have $x=0$ that is the y-axis. See graph.
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.