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# The co-ordinate of the vertices of the rectangular hyperbola $xy=16$ are

$\begin{array}{1 1}(1)(4 ,4 )(-4 ,-4)&(2)(2 ,8 )(-2 , -8 )\\(3)(4 ,0 )(-4 , 0 )&(4)(8 , 0 )(-8 , 0)\end{array}$

The equation of the given rectangular hyperbola is $xy= 16$
$c^2=16$