19.
如图,在平面直角坐标系中,菱形ABCD的顶点C与远点O重合,点B在y轴的正半轴上,点A在反比例函数$y=\frac{k}{x}(k>0,x>0)$的图象上,点D的坐标为(4,3),则k的值为( )
| A. | 20 | B. | 32 | C. | 24 | D. | 27 |
16.若点A(x1,y1),B(x2,y2),和C(x3,y3),分别在反比例函数$y=\frac{6}{x}$的图象上,且x1<x2<0<x3,则下列判断中正确的是( )
0 282624 282632 282638 282642 282648 282650 282654 282660 282662 282668 282674 282678 282680 282684 282690 282692 282698 282702 282704 282708 282710 282714 282716 282718 282719 282720 282722 282723 282724 282726 282728 282732 282734 282738 282740 282744 282750 282752 282758 282762 282764 282768 282774 282780 282782 282788 282792 282794 282800 282804 282810 282818 366461
| A. | y1<y2<y3 | B. | y2<y1<y3 | C. | y3<y2<y1 | D. | y2<y3<y1 |