Aline segment is drawn from (1, 3) to (8, 3) on a coordinate grid.

which answer explains one way that the length of this line segment can determined?

a. subtract 8-1.
b. subtract 8-3.
c. add 1+3.
d. add 1+8.

need

The answer would be A because 
(1,3) 
(  8,3)= subtract 8-1
because since they are positive numbers , u would find the numbers that are the same ( in this case 3) and cross then out and then you would use the rest of the numbers ( in this case 1 and 8) and ether add or subtract (in this case subtract 1-8)

A is the answer, hope this helps!!