Answer
Refer to the image below for the graph.
Work Step by Step
Add 6 to each side of the inequality to obtain:
$\begin{array}{ccc}
&x-6+6 &\lt &1+6
\\&x &\lt &7
\end{array}$
Thus, the solution set is $(-\infty, 7)$.
To graph this on a number line. plot a hollow dot at $7$, then shade the region to its left.