Solve the system of inequalities by graphing.
x≥ –9
x< –1
Select a line to change it between solid and dotted. Select a region to shade it.
Since x has to be greater than or equal to -9 but less than -1, we shade the region between -9 and -1 on the number line.
The line x = -1 should be a dotted line because it is not included in the solution set.
The graph should look like this:
https://www.wolframalpha.com/input/?i=x%3E%3D-9%2C+x%3C-1