To solve this problem you must apply the mipoint formula, which is shown below:
midpoint=((x1+x2)/2;(y1+y2)/2)
By substituyinh the values given in the problem shown above, you have the following result:
midpoint=((x1+x2)/2;(y1+y2)/2)
midpoint=((-2+4/2),(0+2/2))
midpoint=(1,1)
The answer is (1,1)