SOLUTION: For Points P(-3,5) and Q(1,3) find (a)PQ and (b)the midpoint of PQ

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Question 181821: For Points P(-3,5) and Q(1,3) find (a)PQ and (b)the midpoint of PQ
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
For Points P(-3,5) and Q(1,3) find (a)PQ and (b)the midpoint of PQ
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The easiest way to do these is to find the average of x and y separately.
(x1+x2)/2 = (-3+1)/2 = -1
(y1+y2)/2 = (5+3)/2 = 4
The midpoint is (-1,4)
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The length of PQ is (using Pythagoras):
sqrt%28%28diffy%29%5E2+%2B+%28diffx%29%5E2%29
=sqrt%28%283-5%29%5E2+%2B+%281%2B3%29%5E2%29
=sqrt%284+%2B+16%29
= sqrt%2820%29
= 2sqrt%285%29
=~ 4.472