SOLUTION: three consecutive vertices of a parallelogram are (1 -3), (-3 -1) (3 5). find the fourth vertex

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Question 1045564: three consecutive vertices of a parallelogram are (1 -3), (-3 -1) (3 5). find the fourth vertex
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

m =%28y%5B1%5D+-+y%5B2%5D%29%2F%28x%5B1%5D+-+x%5B2%5D+%29
(-3,-1)
( 1, -3) m = 2/-4 = -1/2 = -3/6 or P(-3,8) which is back 6 & up 3 from P(3.5)
(1,-3),
(3,5), m = -8/-2 = 4 = 8/2 or P(-1,7) which is up 2 & up 8 from P( -3,-1)
P(-1,7) the fourth vertex
P(-1,7) could also be found using graph paper and simply sketching the appropriate parallel green lines in... they would intersect at the 4th vertex