∵BC is parallel to the x axis,
∴S△ABC= 12BC？ CD，
BC = 2，S△ABC= 1，
∴CD= 1，
∴c(2, 1)；
(2)∵ According to the nature of rotation, CB 1=CB=2,
∴B 1(2,3).
Let the inverse proportional function passing through point b1(2,3) be y=kx,
∴3=k2，
The solution is k=6,
The inverse proportional function passing through point B 1 is y = 6x.