<PRE><B>Question 759005</B>
midpoint of a line is the x co-ordinate of one point plus the x co-ordinate of the other, all divided by 2; and the same for the y co-ordinates.
so, here we have

x + (-1) all divided by 2, and y + (-6) all divided by 2
and we know that this corresponds to (2, -2)

therefore the x co -ordinate of the  midpoint is

(x-1)didvided by 2 = 2.  make x the subject, and you get x= 5

for the y co=ordinate you have

(y-6) divided by 2 = -2.  make  y the subject and you get y=2

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