If (x1, y1) and (x2, y2) satisfy xy = k, then x1y1 = x2y2, find y2. (18, 2) and (x2, y2), if x2=y2
x1y1 = x2y2 18*2 = x2*y2 = 36 if x2=y2 then (y2)^2 = 36 y2 = 6 or -6
s
Updated 1/12/2015 5:39:41 AM
Rating
8
x1y1 = x2y2
18*2 = x2*y2 = 36
if x2=y2
then (y2)^2 = 36
y2 = 6 or -6
Confirmed by jeifunk [1/12/2015 8:20:48 AM]

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