SOLUTION: Two of the vertices of a rectangle are (1,-6) and (-8,-6). If the rectangle has a perimeter of 26 units, what are the coordinates of its other two vertices?

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Question 1025344: Two of the vertices of a rectangle are (1,-6) and (-8,-6). If the rectangle has a perimeter of 26 units, what are the coordinates of its other two vertices?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The distance between those two points is 1-%28-8%29=9 so then the missing distance is,
P=2x%2B2y=26
2%289%29%2B2y=26
18%2B2y=26
2y=8
y=4
The y coordinate can either move up or down,
y%5B1%5D=-6-4=-10
or
y%5B2%5D=-6%2B4=-2
So the other two points are either,
(1,-10)
(-8,-10)
or
(1,-2)
(-8,-2)