7. Haimon means that he will commit suicide if Antigone is executed; however, Creon thinks his son intends to kill him.
8. At the beginning of the scene, Haimon tells his father that he is more important than any woman and that he will obey him. At the end, Haimon challenges his father's idea that he has absolute power, and calls him stubborn.
9.Haimon leaves when Creon orders Antigone brought forth because Creon intends to murder her and he refuses to see her die.
10. Haimon decides to seal her in a tomb, with just enough food that her death cannot be considered murder. In this way, he reasons, he will avoid cursing the state of Thebes with murder.
I couldn't quite tell what number 6 was saying. Hope this helps you, though!