Hello!
Given the two points, 
 and
 and 
 , and to find the distance between these two points is found by using the formula:
, and to find the distance between these two points is found by using the formula: 

 is assigned to one the points, in this case, is (4, 1).
 is assigned to one the points, in this case, is (4, 1).
 is assigned to other point, which is (9, 1).
 is assigned to other point, which is (9, 1). 
Then, plug in these values into the formula and solve. 




Therefore, the distance between the two points is 5.