You can put this solution on YOUR website!
First, let's solve
I'm just a new tutor so I can't graph it for you, but, I can teach you how.
First, locate -6. Then put a small circle (don't make it too small, it may only appear as a dot!) Don't shade it for it will imply that x is greater than or equal to -6. After that, from that tiny circle, draw a ray going to the right(tip:to avoid confusion, use a different color in drawing the ray). And, there you go, you're done!