Answer
True
Work Step by Step
Opposite binomials are of the form $a-b$ and $b-a$. Since $x-y$ and $y-x$ are in similar form to $a-b$ and $b-a$, they are indeed opposite binomials.
Therefore, the statement is true.
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.