End behavior
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Negative infinity
As you move left on the x-axis, the graph of f(x) is going to negative infinity. This means as, x gets more and more negative f(x) is also getting more negative
Postive infinity
As you move to the right on the x-axis, the graph of f(x) is going to positive infinity. This means, as x gets larger and larger, f(x) is also getting larger
End behavior
The end behavior of a function f(x) describes the behavior of the graph of the function at the "ends" of the x-axis. In other words, the end behavior of a function describes the y-values if we look to the right end of the x-axis(as x approaches +∞) and to the left end of the x-axis (as x approaches -∞)