Answer
Not one-to-one function
Work Step by Step
$p$ is not one-to-one function because $p(-0.2)=p(0.881)$ but $-0.2\neq 0.881$ or there are two values of $x$ such that $p(x)=3$.
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.