#### Answer

The graph of f has no removable, infinite, or jump discontinuities. This means the graph has no holes nor vertical asymptotes and can be traced without ever lifting your pencil.

#### Work Step by Step

If f is continuous on ($-\infty$,$\infty$), that means it is continuous on everything except $-\infty$ and $\infty$. $-\infty$ and $\infty$ aren't real numbers. Therefore, f is continuous at all real numbers and as such, there are no discontinuities in the graph of f.