Checkpoint: End Behavior of Functions Solution

Name the end behavior of the graph.

As $x \to + \infty, f (x) \to - \infty$ and as $x \to - \infty, f (x) \to + \infty$

Note

Q: If the y-values are continuing to increase, what is the graph approaching?

A: Positive infinity

Read your statement about end behavior out loud to make sure you know what words the symbols represent. “As x approaches positive infinity, the y-values (f(x)) approach negative infinity. And, as x approaches negative infinity, the y-values (f(x)) approach positive infinity.”