He tells her this because he has decided not to go ahead with it. His whole "If it were done when tis done then it were best it were done quickly" speech is him carefully considering the reasons for and against committing the murder. He finds lots of reasons against it, and only one insufficient reason for it--"vaulting ambition". But all the reasoning in the world cannot stand up to her contemptuous statement that he has no balls if he refuses to go ahead with her plan.
Macbeth tells Lady Macbeth that he won't do the murder because he is initially conflicted about killing King Duncan. He is torn between his ambition to become king and his moral conscience, which creates hesitation and doubt in his mind. This internal struggle highlights the complexity of Macbeth's character and the moral dilemmas he faces as he contemplates committing regicide.
Lady Macbeth tells Macbeth to hide his emotions and actions.
She tells him that he has to die so MacBeth can become king.
Lady Macbeth tells Macbeth that if they fail in their plan to murder King Duncan, they will simply try again until they succeed. She reassures him that their ambition and determination will ensure their success.
Macbeth and lady Macbeth try to avoid suspicion by getting into their pajamas after committing the murder so people will think they were asleep all the time.
Lady Macbeth
He doent want to murder the king but he said if it were to be done it would be done quickly. Lady Macbeth tells him if he keeps a straight face they will get away with it.
Macbeth and Lady Macbeth plan to murder King Duncan by inviting him to their castle as guests, then waiting until he is asleep to kill him. They plan to frame the chamberlains for the murder by planting the murder weapons on them.
Lady Macbeth effects Macbeth's actions by pushing him towards the murder. Initially, Macbeth was unsure of what he wanted to do. He stated that if he was meant to become king, it would happen naturally. Lady Macbeth caused him to change his mind and planned the murder of King Duncan.
Lady Macbeth is telling Macbeth to grow up and just kill the King. But Lady Macbeth tells Macbeth that she cant kill him since he looks like her father, this shows the reader that Lady Macbeth isn't as crazy as we think she is.
it never really tells you where she is from.
Yes
Lady Macbeth tells the guests that this is just a strange habit Macbeth has. "Think of this, good peers, But as a thing of custom. 'Tis no other; Only it spoils the pleasure of the time."