1. x2+y2=2a2
2. 2x2+2y2=a2
3. a2(x2+y2)=1
4. a2(x2+y2)=2
a2(x2+y2)=1
1. x+y=0
2. x-y=0
3. xy=0
4. none
xy=0
1. x2+y2=4a2
2. x2+y2=2ax
3. x2+y2=2ay
4. x2+y2=2ax+2ay
x2+y2=2ax+2ay
1. touches both the axes
2. touches the x-axis only
3. touches the y-axis only
4. does not touch the axes
touches both the axes
1. a circle of radius 2
2. a circle of radius 4
3. a circle of radius3
4. none
a circle of radius 2
1. 1/x2+1/y2=1
2. 1/x2+1/y2=1/4
3. 1/x2+1/y2=1/2
4. none
1/x2+1/y2=1
1. ±20
2. -1, -5
3. ±2
4. 4
-1, -5
1. ±20
2. -1, -5
3. ±5
4. 4
±5
1. x2+y2-4x-6y+4=0
2. x2+y2+6x-8y+16=0
3. x2+y2-8x-6y+21=0
4. x2+y2-24x-10y+144=0
x2+y2-4x-6y+4=0
1. x2+y2-4x-6y+4=0
2. x2+y2+6x-8y+16=0
3. x2+y2-8x-6y+21=0
4. x2+y2-24x-10y+144=0
x2+y2+6x-8y+16=0