1 |
9 |
2 |
3 |
S△APQ |
S△ABC |
1 |
9 |
AF |
AE |
1 |
3 |
|2×1-3×3-1| | ||
|
8
| ||
13 |
8
| ||
39 |
16
| ||
39 |
2 |
3 |
16
| ||
39 |
|3b-(-1)| | ||
|
16
| ||
39 |
13 |
9 |
19 |
9 |
2 |
3 |
13 |
9 |
A.3x+y+6=0 | B.3x-y+2=0 | C.3x+y-6=0 | D.3x-y-2=0 |
A.x+y=5 | B.x-y=5 |
C.x+y=5或x-4y=0 | D.x-y=5或x+4y=0 |
A.2x+y-12=0 | B.2x+y-12=0或2x-5y=0 |
C.x-2y-1=0 | D.x-2y-1=0或2x-5y=0 |
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