A number line is shown. Point P is a point on the number line. Part A:
Melvin claims that the opposite of point P is a positive number. This statement is only sometimes true.

Identify a value for point P where the opposite of point P is a positive number.
Identify a value for point P where the opposite of point P is a negative number.
Explain why the opposite of point P is only sometimes a positive number.
Part B:
Melvin also says that the absolute value of point P is always positive. This statement is always true. Explain why the absolute value of point P is always positive.

Show your two answers and two explanations.

Enter your answers and explanations in the box provided.