1. y2+2ax=0
2. y2+3ax=0
3. y2+ax=0
4. 2y2+ax=0
y2+ax=0
1. The axis
2. a focal chord
3. the directrix
4. the tangent at the vertex
the directrix
1. 3/4
2. 2/3
3. 1/9
4. 1/4
1/4
1. (x2/25)+(y2/9)=1
2. (x2/32)+(y2/16)=1
3. (x2/25)+(y2/7)=1
4. (x2/25)+(y2/12)=1
(x2/25)+(y2/9)=1
1. 2
2. 4
3. 6
4. 8
6
1. √7/2
2. √5/2
3. 7/12
4. √7/4
√7/4
1. 1/2
2. 1/√2
3. 1/3
4. √3/2
√3/2
1. 1/4
2. 2/3
3. 1/3
4. 1/2
1/3
1. 3/5
2. 4/5
3. 2/3
4. 1/3
4/5
1. 2/3
2. 3/4
3. 4/5
4. 1/2
2/3