Answer
$x: [-2, 1)$
Work Step by Step
The graph of $f(x)$ changes direction on point $(-2, 2)$ and starts descending onwards to negative infinity. However, the graph of $f(x)$ is bound by the vertical asymptote $x=1$ and cannot cross it. We can conclude, therefore, that the graph begins to descend starting when $x=-2$ and continues until $x=1$ without including the value of 1. This is expressed as $x: [-2, 1)$ since -2 is included but 1 is not.
