Answer
(a) $\lim _{x \rightarrow-\infty} f(x)=-\infty$
(b) $\lim _{x \rightarrow \infty} f(x)=-\infty$.
Work Step by Step
The graphs show that the limits of the functions are
(a) $\lim _{x \rightarrow-\infty} f(x)=-\infty$
(b) $\lim _{x \rightarrow \infty} f(x)=-\infty$.
