12.在平面直角坐标系中,直线a向下平移3个单位后所得直线b经过点A(0,3),将直线b绕点A顺时针旋转60°后所得直线经过点B(-$\sqrt{3}$,0),则直线a的函数关系式为( )
0 282567 282575 282581 282585 282591 282593 282597 282603 282605 282611 282617 282621 282623 282627 282633 282635 282641 282645 282647 282651 282653 282657 282659 282661 282662 282663 282665 282666 282667 282669 282671 282675 282677 282681 282683 282687 282693 282695 282701 282705 282707 282711 282717 282723 282725 282731 282735 282737 282743 282747 282753 282761 366461
| A. | y=-$\sqrt{3}$x | B. | y=-$\frac{\sqrt{3}}{3}$x | C. | y=-$\sqrt{3}$x+6 | D. | y=-$\frac{\sqrt{3}}{3}$x+6 |