Question 925828
a) Find the distance between the points (7,-8) and (-2,4)
--
It's the Pythagorean Theorem.
{{{d^2 = diffy^2 + diffx^2 = 12^2 + 9^2}}}
{{{d^2 = 153 = 9*17}}}
{{{d = 3sqrt(17)}}}
-----
b) Find the midpoint of the line segment with endpoints (7,-8) and (-2,4)
It's the average of x any y separately.
For x: (7-2)/2 = 2.5
For y: (-8+4)/2 = -2
--> (2.5,-2) or (5/2,-2)