College Algebra (10th Edition)

The value of $x$ is less than $-4$. Since the upper limit 4 is not included in the set, a close parenthesis will be used. The inequality is unbounded on the left side, so $-\infty$ will be used. Thus, the interval notation equivalent of the given inequality is: $(-\infty, -4)$ To graph this interval on a number line, plot a hollow dot (or a hole) at $-4$. Then, shade the region to its left. Refer to the attached image in the answer part above for the graph.