Question

find the coordinates of the midpoint whose endpoints are A (-5,3) and B (3,3)

Answer 1

x= (-5+3)/2=-1
y= (3+3)/2=3

Answer 2

The midpoint of A(x1,y1) and B(x2,y2):
\[x=\frac{x_1+x_2}2\]\[y=\frac{y_1+y_2}2\]