1. 3
2. 4
3. 6
4. 12
6
1. (2, 1)
2. (-1,4)
3. (I, 2)
4. (4,-1)
(I, 2) <br>
1. 2x + 5y + 17 = 0
2. 2x + 5y - 17 = 0
3. 2x - 5y + 17 = 0
4. 2x - 5y = 17
2x - 5y + 17 = 0
1. c2 / (a2 + b2)
2. c2 / 2(a2 + b2)
3. c2 / √2(a2 + b2)
4. csup>2 / √3(a2 + b2)
c<sup>2</sup> / 2(a<sup>2</sup> + b<sup>2</sup>)
1. 1/25
2. 2/25
3. 3/25
4. 4/25
2/25
1. 2/√14 , 3/ √14, 1/ √14
2. 2/√14 , -3/ √14, 1/ √14
3. -2/√14 , -3/ √14, 1/ √14
4. 2/√14 ,- 3/ √14, -1/ √14
2/√14 , -3/ √14, 1/ √14
1. (0,4, 6)
2. (0,-4,-5)
3. (0,-4,-6)
4. (0,-4, 6)
(0,-4,-5)
1. x2 + y2 + 2x + 2y + 2 = 0
2. x2 + y2 + 2x + 2y-l =0
3. x2 + y2 + 2x + 2y + l =0
4. x2 + y2 + 2x + 2y+ 3= 0
x<sup>2</sup> + y<sup>2</sup> + 2x + 2y + l =0
1. 2 (x2 + y2) + 3x - y + 1=0
2. 2(x2 + y2) + 3x - y + 2 = 0
3. 2(x2 + y2) + 3x-y +3 = 0
4. x2 + y2 + 3x-y +1 = 0
2(x<sup>2</sup> + y<sup>2</sup>) + 3x-y +3 = 0
1. 3y=x
2. y=-3x
3. y=2x
4. y=-2x
y=2x