Answer
one-to-one
Work Step by Step
One of the condition that a function $y=f(x)$ having an inverse is that the function need to be "one-to-one". This means that for each $x$, there is only one corresponding $y$. Thus the answer is "one-to-one".
You need to log in to continue
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.