![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
与向量a=(3,2)垂直的向量是()
A.(2,3)
B.(-4,6)
C.(3,2)
D.(-3,2)
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
B、(-4,6)
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.(2,3)
B.(-4,6)
C.(3,2)
D.(-3,2)
B、(-4,6)
过点M(-3,2),且与向量a=(-2,1)平行的直线方程是
A.x-2y+7=0
B.x+2y-1=0
C.2x+y+8=0
D.x+2y+4=O
给出四个向量a=(1,-2),b=(2,-1),c=(4,8),d=(-4,-2),下面四组向量中互相垂直的一组向量是()
A.a与b
B.c与d
C.a与c
D.b与c
已知平面向量a=(-2,1)与b=(λ,2)垂直,则λ=()。
A.4
B.-4
C.1
D.1