∵点A(-2,y1),B(-1,y2),C(3,y3)都在反比例函数y= 6 x 的图象上,∴y1= 6 ?2 =-3,y2= 6 ?1 =-6,y3= 6 3 =2,∵-6<-3<2,∴y2<y1<y3.故选D.