A:x=1
B:x=-1
C:x=-3
D:x=3
钟表上的指针随时间的变化而移动,这可以看作是数学上的____ .
——Excuse me, haven't you learned the new law? Everyone in a car must wear the seat belt.——Sorry, we won't do that again.
如图,在直角坐标系中,直线y=﹣ 12 x与反比例函数y= kx 的图象交于关于原点对称的A,B两点,已知A点的纵坐标是3.