Question 158776
Find the coordinate of the midpoint of a segment with the given endpoints. 
P(-4,2)
Q(8,-4) 
P(-1,3.5)
Q(7,-5.5) 
P(-12,4)
Q(-3,-6)
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The best way to do these is to solve for x and y separately, by finding the average of each.
P(-4,2)
Q(8,-4)
x = (-4+8)/2 =2
y = (2-4)/2 = -1
M = (2,-1)
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P(-1,3.5)
Q(7,-5.5) 
x = (-1+7)/2 = 3
y = (3.5-5.5)/2 = -1
M = (3,-1)
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P(-12,4)
Q(-3,-6)
x = (-12-3)/2 = -7.5
y = (4-6)/2 = -1
M = (-7.5,-1)