Kevin weighed 200 pounds when he started his diet and lost 26 pounds. what percent of his original weight did kevin lose?
a
8%

b
12%

c
13%

d
16%

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)