1. 4x-6y+7=0
2. 4x-6y+11=0
3. 4x-6y+9=0
4. 4x-6y+5=0
4x-6y+5=0
1. (a/4,-4a)
2. (a/2,-a/2)
3. (a/4,-a)
4. (a/2,-a/4)
(a/4,-a)
1. 3/7
2. 12/5
3. 7/3
4. 5/12
12/5
1. x+2y-7=0
2. x+2y=5
3. x+2y=0
4. 2x-y=0
x+2y=0
1. 18
2. 13
3. 73/4
4. 57/4
73/4
1. 4
2. 4/3
3. 1/3
4. 2/3
4/3
1. (6,1)
2. (3,1)
3. (4,1)
4. (5,1)
(3,1)
1. π/2
2. π/3
3. π/4
4. π/6
π/2
1. y+5=0
2. y+1=0
3. y+2=0
4. y+3=0
y+2=0
1. 6
2. 2
3. 1/3
4. 3/2
2