1. a/2
2. a
3. 2a
4. 4a
2a
1. (-1,1)
2. (-2,2)
3. (1,-1)
4. (2,-2)
(2,-2)
1. x = y
2. x + y = 0
3. y = 0
4. x = 0
x = 0
1. 1
2. -1
3. 2
4. -2
-1
1. 1
2. 3
3. 5
4. 8
8
1. (6,-4)
2. (-6,4)
3. (6,4)
4. (-6,-4)
(-6,-4)
1. 2/5
2. 3/5
3. 4/5
4. 6/5
6/5
1. (1,1)
2. (1,2)
3. (2,0)
4. (2,2)
(1,2)
1. (a/e,0)
2. (-a/e,0)
3. (ae,0)
4. (-ae,0)
(ae,0)
1. a/b
2. √b/a
3. √13/2
4. √13/3
√13/3