Answer
(a) $f(2)=2$
(b) $f(-1)=3$
Work Step by Step
(a) Here we require the y-value of the ordered pair when $x=2$. As indicated by the ordered pair $(2,2)$, when $x=2$, $y=2$. Therefore, $f(2)=2$.
(b) Here we require the y-value of the ordered pair when $x=-1$. As indicated by the ordered pair $(-1,3)$, when $x=-1$, $y=3$. Therefore, $f(-1)=3$.
