$x \lt 1$ Refer to the image below for the graph.
Work Step by Step
A parenthesis at 1 ,means $1$ is not included in the set, An infinity on the left means the graph goes to the left of $1$ without bound. Thus, the equivalent inequality of the given interval is: $x \lt 1$ To graph the interval on a number line, hole (or a hollow dot) at $1$ then, shade the region to its left. (refer to the attached image in the answer part above)