( )
15
8. , , ? : .
(1,0), (-2,-3), (2,1).
9. , (4,2) (-6,2).
10. , , , ,
6-3+11=0 =4+t, =-3+2t.
11.
12+2y+6z-3=0, 7-5y+10=0, 6x+y+3z+12=0.
12. .
(4,2,0), : -2x+y+2z+5=0.
13. , , ( ):
: 
: -x+5y+3z-2=0.
( )
=4+3t, y=7-2t, z=3+t x=1, y=1-t, z=2+3t.
16
1. , , ? : . (1,2), (5,-2), (3,-1).
2. , (-2,3) (-2,4).
3. , , , ,
2+5-36=0 =-3+2t, =-9+5t.
4.
5+2y-4z-21=0, -3+y+18=0, x+6y+z-30=0.
5. .
(1,5,3), : -2x+2y+z+5=0.
6. , , ( ):
: 
: 2x-3y+3z-5=0.
( )
17
1. , , ? : .
(6,1), (10,5), (2,-3).
2. , (-1,1) (0,2).
3. , , , ,
3+9+8=0 =1+3t, =-t.
4.
-3+y+2z=0, -9+3y+6z+10=0, -6x+2y+4z-1=0.
5. .
(2,-1,7), : -2x+2y+z+5=0.
6. , , ( ):
: 
: 2x+y-4z+3=0.
 |
7. ( )
 |
18
|
|
|
1. , , ? : .
(2,3), (-1,0), (3,4).
2. , (0,1) (-6,-8).
3. , , , ,
4+5-2=0 =-7+5t, =6-4t.
4.
2+3y-z+1=0, +7y+2z=0, -x+15y+8z-2=0.
5. .
(4,0,2), : -2x+2y+z+5=0.
6. , , ( ):
: 
: -x+5y+3z-3=0.
7. ( )
19
1. , , ? : .
(1,3), (-1,6), (1,5).
2. , (-1,1) (-1,-5).
3. , , , ,
4+3+9=0 =-3t, =-3+4t.
4.
5y-2z+4=0, +3y-5=0, x+8y-2z+7=0.
5. .
(3,5,-1), : x+2y+2z+5=0.
6. , , ( ):
: 
: 2x-3y+3z-7=0.
7. ( )
=3+3t, y=6-2t, z=2+t x=2, y=2-t, z=3+3t.
20
1. , , ? : .
(2,8), (6,12), (-2,4).
2. , (1,-2) (3,-4).
3. , , , ,
5-2+2=0 =-8-t, =2+t.
4.
12+6y+2z-3=0, -7+5z-10=0, 6x+3y+z+12=0.
5. .
(7,1,2), : x-2y-2z+5=0.
6. , , ( ):
: 
: 2x+y-4z+6=0.
7. ( )
 |
21
1. , , ? : .
(1,1), (-2,-2), (2,2).
2. , (1,-1) (2,0).
3. , , , ,
5+2-33=0 =-10+5t, =-2+2t.
4.
-5+4y-2z+21=0, 3-z-18=0, x+y+6z-30=0.
5. .
(2,0,-4), : x+2y+2z+5=0.
6. , , ( ):
|
|
|
: 
: 5x-y+3z-3=0.
7. ( )
