Posted by Hannah on Thursday, September 13, 2012 at 11:41pm.
So the slope between any segment must be the same
slope for first two points:
(0-1)/(4-2) = -1/2
slope between 1st and last point:
(k^2 - 1)/(-4-2) = (k^2 - 1)/-6
so (k^2 -1)/-4 = -1/2
2k^2 - 2 = 4
2k^2 = 6
k^2 = 3
k = ± √3
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