Answer
$0$.
Work Step by Step
The given monomial is
$=-\frac{4}{9}$
Rewrite as
$=-\frac{4}{9}x^0$
The exponent of $x$ is $0$.
Hence, the degree of the monomial is $0$.
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.