I need some help for two of the lines.

Step-by-step explanation:

I believe these are correct, but of course I could also be wrong, so please let me know.

Remember that if the shaded space is above the line then the sign will be either "greater-than" or "greater-than-or-equal-to", if the shaded space is below the line then it will be the "lesser-than" varients. You only use the greater-than sign when the line is dotted, and the greater-than-or-equal-to sign when it's not, and same goes for the lesser-than varients.

I hope the short explaination makes sense. If you need more help or don't understand something, please let me know. I'd be happy to help :)