Question 283112
Find the distance between each pair of points and the midpoint of the line segment joining the points. Leave distance n radical form. 
(-5,4), (6,-1)
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{{{s = sqrt(diffy^2 + diffx^2)}}}
{{{s = sqrt(5^2 + 11^2)}}}
{{{s = sqrt(146)}}}
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To find the midpoint, get the averages of x and y separately.
x = (-5+6)/2 = 1/2
y = (4-1)/2 = 3/2
Midpoint is (1/2,3/2)