Answer
(a) $f(2)=1$
(b) $f(-1)=7$
Work Step by Step
(a) In the mapping, the domain element $2$ is paired with $1$ in the range. Therefore, $f(2)=1$.
(b) In the mapping, the domain element $-1$ is paired with $7$ in the range. Therefore, $f(-1)=7$.
