Answer
a. 1, b. 7
Work Step by Step
The domain element 2 is paired with 1 in the range, so we know that $f(2)=1$.
The domain element -1 is paired with 7 in the range, so we know that $f(-1)=7$.
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.