1. √2
2. 11/√74
3. √5/2
4. √(5/2)
11/√74
1. 2
2. 1
3. 0
4. 3
0
1. 1
2. 2
3. 3
4. 4
2
1. 8x+y+1=0
2. 8x-y+1=0
3. 8x-8y+1=0
4. -8x+8y+1=0
8x-y+1=0
1. 3x2+3y2-6y-2=0
2. 21x-68=0
3. x-2y-5=0
4. x+2y+5=0
21x-68=0
1. 1
2. 3
3. 5
4. 8
8
1. (2,3)
2. (3,2)
3. (-2,3)
4. (-3,-2)
(2,3)
1. 8x+y-30=0
2. 8x+y+20=0
3. 8x+3y-20=0
4. 8x+y-20=0
8x+y-20=0
1. 2
2. 1
3. 0
4. 3
0
1. 1
2. 2
3. 3
4. 4
1