Final answer:
The graph of a function can either go on forever or be cut off at some point, depending on the nature of the function and any restrictions on its domain.
Step-by-step explanation:
The graph of a function can either go on forever or be cut off at some point.
In many cases, the graph of a function can continue indefinitely in both the positive and negative directions. This is often the case for linear functions and exponential functions. For example, the graph of the function y = 2x goes on forever in both directions.
However, there are also cases where the graph of a function is cut off at some point. This can happen with functions that have restrictions on their domain. For example, the graph of the function y = x^2 is a parabola that is only defined for nonnegative values of x, so it is cut off at the y-axis.