Question 29: On the number line, point A is 4 units from the origin to the left, and point B is 1 unit from the origin to the right. How far is point A from point B?

Looking at the number axis we see:
The point 4 units from the origin on the left hand side is the point ,−4, so the point A represents the number: −4
The point 1 unit to the right from the origin is: 1, so point B represents the number .1.

Point −4 is five units from point 1.

So point A is 5 units from point B.