Answer
a. Yes. No. No. No.
b. $V=\{(-2,6), (0,4), (0,8), (2,6)\}$
c. The domain is $G=\{-2,0,2\}$. The range is $H=\{4,6,8\}$.
d.
Work Step by Step
Be careful with negatives: $\frac{(-2)-6}{4}=-2$, $\frac{0-4}{4}=-1$, $\frac{0-8}{4}=-2$, and $\frac{2-6}{4}=-1$.
