3 |
3 |
A.平行 | B.垂直 | C.斜交 | D.重合 |
3 |
| ||
3 |
3 |
| ||
3 |
A.2x-3y+5=0 | B.2x-3y=0 | C.3x+2y+3=0 | D.3x+2y-12=0 |
A.3x-y-7=0 | B.3x-y-5=0 | C.x+3y+1=0 | D.x+3y-13=0 |
A.x-2y+3=0 | B.2x-y-3=0 | C.2x+y-5=0 | D.x+2y-4=0 |
A.2 | B.-2 | C.2,-2 | D.2,0,-2 |
A.
| B.
| C.-
| D.-
|
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