[tex]\text{Consider the limit}\\
\\
\underset{x\rightarrow -\infty}{\lim}f(x)=-\infty\\
\\
\text{It implies that as the value of x is decreasing to very large to reach}\\
\text{negative infinity, the value of the function f(x) is also approching to }\\
\text{the value negative infinity.}[/tex]
[tex]\text{On the coordinate axis, we know that }-\infty \text{ occur when we move}\\
\text{to the left on x-axis without reaching a maximum.}\\
\\
\text{and the function value f(x) is given by the vertical axis. now since f(x) is}\\
\text{approaching to negative infinity also, so the graph will move downward without}\\
\text{reaching a minimum. so}[/tex]
A. The graph falls on the left side.
