I AM STUCK? PLEASE HELP ME

Question

If A has coordinates (2, –1) and B has coordinates (–1, 1), what are the coordinates of the midpoint of AB ?

Answer 1

The midpoint is calculated by (x1+x2)/2, (y1+y2)/2

Plugging in the points given:

(2+-1)/2 ,(-1+1)/2

(1/2,0/2)

(1/2,0)