No in Half-Blood Prince he tries to but fails so Severus Snape takes over.
Yes, Draco Malfoy plays quite an important role in Harry Potter and the Deathly Hallows.
Draco Malfoy had been very mean to Harry Potter until Harry had saved his life in the Deathly Hallows.
Kyloias: At the end of Harry Potter and the Deathly Hallows\Part 2, since (in the Half Blood Prince) Draco disarmed Dumbldore which made it Draco's. In Harry Potter and the Deathly Hallows\Part 2 Harry disarmes Draco which made it his.
Yes, Albus Dumbledore was killed by Severus Snape in Harry Potter and the Half-Blood Prince. It was later revealed that Dumbledore had asked Snape to kill him.Severus Snape was killed by Lord Voldemort in Harry Potter and the Deathly Hallows. Voldemort murdered him thinking that, as the person who killed Dumbledore, he was the master of the Elder wand. He failed to realise that Draco Malfoy had disarmed Dumbledore, making him the master, and that Harry Potter had later disarmed Draco, making him the current master.
Draco Malfoy wasn't killed.
Draco was still single that time.
Nobody is in charge of him.
It is revealed in The Deathly Hallows that Dumbledore was dying anyway and ordered Snape to kill him so that Draco would not have to.
Yes, he appeared in both parts.
Scorpius Hyperion Malfoy.
Draco is in it, but his role is minor really. He's not the main antagonist anymore.
Astoria Greengrass