Let's say the point is C, so C partitions AB into two pieces, where AC is at a ratio of 3 and CB is at  a ratio of 7, thus 3:7,

 
 
        
        
        
Answer:
   0
Step-by-step explanation:
The sorted data set is ...
   1 2 3 3 5 7 8 9
The median is the average of the middle two numbers: (3+5)/2 = 4.
Replacing one of the 3s with a 1 makes the data set be ...
   1 1 2 3 5 7 8 9
The average of the middle two numbers is (3+5)/2 = 4.
The median increases by 4 - 4 = 0.
 
        
             
        
        
        
Answer:
B
Step-by-step explanation:
The second one!!!