1. [-1, 3]
2. [2, 3]
3. [-1, 2]
4. [-2, 2]
[-1, 2]
1. x-2=0
2. y-2=0
3. x+y-4=0
4. none
y-2=0
1. x+5y= ±5√2
2. x+5y= ±2√5
3. 5x-y= ±5√2
4. 5x-y= ±2√5
x+5y= ±5√2
1. (1, 5), (1, 9), (5, 9), (5, 5)
2. (2, 5), (2, 7), (4, 7), (4, 4)
3. (2, 5), (2, 6), (3, 5), (3, 6)
4. none
(1, 5), (1, 9), (5, 9), (5, 5)
1. 2x-3y+4=0
2. 2x-y+3=0
3. y-3x-8=0
4. x+2y-1=0
y-3x-8=0
1. x+7y-31=0
2. x+7y-15=0
3. x+7y8=0
4. 7 x-y-31=0
x+7y-31=0
1. y=(√3-2)x+(3-√3)
2. y=0
3. y=x
4. y=(√3-2)x+√3+1
y=(√3-2)x+√3+1
1. x-y-1=0
2. x+y-1=0
3. x-y+1=0
4. x+y-7=0
x+y-7=0
1. 2x-y=4
2. 2x+y=4
3. 2x+y-7=0
4. 2x+y+7=0
2x-y=4
1. 18
2. -3
3. 1/2
4. -1/3
18