1.下列二次根式中,与 属同类二次根式是··································( )
(A); (B) ; (C) ; (D) .
2.下列各数中是方程 的根的是································( )
(A) ; (B) (C) ; (D) 3.
3.直线 不经过点··················································( )
(A)(0,0) (B)(-2,3) (C)(3,-2) (D)(-3,2)
4.如果反比例函数的图像经过点(-8,3),那么当 时y的值随x的值的增大而··( )
(A) 增大 (B)不变; (C) 减小 (D)无法确定