Points a and B are the corresponding points of negative 3 and 1 on the number axis, so that line AB moves to the right along the number axis to a'B ', and the corresponding number of the midpoint of line a'B' is 3 Then the number corresponding to point a 'is? The distance that point a moves is?

Points a and B are the corresponding points of negative 3 and 1 on the number axis, so that line AB moves to the right along the number axis to a'B ', and the corresponding number of the midpoint of line a'B' is 3 Then the number corresponding to point a 'is? The distance that point a moves is?

Point A-1
Point B 5
Move four units
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