12.一次函数y=-x+1与反比例函数y=-
,x与y的对应值如下表:
|
x |
-3 |
-2 |
-1 |
1 |
2 |
3 |
|
y=-x+1 |
4 |
3 |
2 |
0 |
-1 |
-2 |
|
y=- |
|
1 |
2 |
-2 |
-1 |
- |
方程-x+1=-
的解为_________________.