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Заданы уравнения 3 прямых: l1, l2, l3. Необходимо



           Заданы уравнения 3 прямых: l1, l2, l3. Необходимо

1). Найи тчки пересечения прямых: М1,2; М1,3; М2,3;

2). Доказать , что треугольник прямоугольный;

3). Найти углы треугольнка М1,3;


 

1.1.     l1: 8x – y = 7

l2: 4x + 2y = 6

l3: x + 3y = -1

 

1.2.     l1: 6x + y = 12

l2: -x + 6y = 35

l3: 8x + y = -35

 

1.3.     l1: x + 4y = 14

l2: 4x - y = 5

l3: 3x + 2y = 1

 

1.4.     l1: 5x + y = 11

l2: x - 5y = -3

l3: x + y = 5

 

1.5.     l1: 6x – y = 10

l2: x + 6y = 14

l3: x - y = 7

 

1.6.     l1: 2x - y = 6

l2: 4x + 8y = -8

l3: x + 6y = -2

 

1.7.     l1: 3x + y = 2

l2: 2x - 6y = 8

l3: 5x + y = -8

 

1.8.     l1: 4x + 3y = 5

l2: 3x - 4y = -15

l3: x + 5y = -5

 

1.9.     l1: 5x – y = 9

l2: x + 5y = 7

l3: 4x + 2y = -8

 

1.10.   l1: 4x - 3y = 5

l2: 3x + 4y = 10

l3: x + y = 2

 

1.11.   l1: 3x – y = 8

l2: x + 3y = 6

l3: x + 2y = 8

 

1.12.   l1: 6x - y = 11

l2: -x + 6y = 4

l3: x + y = 10

 

1.13.   l1: 4x + 4y = 12

l2: -x + y = 1

l3: 2x - y = 5

 

1.14.   l1: x + 8y = 10

l2: -8x + y = -15

l3: x + y = -6

 

1.15.   l1: 5x + 2y = 12

l2: -2x + 5y = 1

l3: x + 2y = -5

 

1.16.   l1: 7x - y = 5

l2: x + 7y = 15

l3: x + 3y = 11

 

1.17.   l1: 3x – y = 7

l2: x + 3y = 9

l3: x + y = 7

 

1.18.   l1: 4x + y = 9

l2: 2x - 8y = -4

l3: x + y = 8

 

1.19.   l1: x + 10y = 14

l2: -10x + y = -39

l3: x + y = -6

 

1.20.   l1: 5x - 2y = 12

l2: 2x + 5y = -1

l3: x + 4y = 1

 

1.21.   l1: 2x + 4y = 6

l2: 6x - 3y = 3

l3: x + y = 5

 

1.22.   l1: 10x - y = 9

l2: x + 10y = 11

l3: x + y = -7

 

1.23.   l1: 3x + 5y = 11

l2: -5x + 3y = -7

l3: x + y = 11

 

1.24.   l1: 12x + y = 10

l2: -x + 12y = -23

l3: x + y = 10

 

1.25.   l1: 8x + y = 10

l2: x - 8y = -15

l3: x + y = -6

 

1.26.   l1: x + y = 5

l2: -x + y = 1

l3: x + 2y = 2

 

1.27    l1: 4x + y = 12

l2: x - 4y = 3

l3: 2x - y = 6

 

1.28    l1: 2x + 2y = 6

l2: -x + y = 2

l3: 2x - y = 3

 

1.29    l1: 3x + 4y = 12

l2: -4x + 3y = 9

l3: 2x - y = 5

 

1.30    l1: 4x + y = 5

l2: -x + 4y = 3

l3: x - y = 9

 

 

1.31    l1: x + 2y = 2

l2: -2x + y = 1

l3: x -2 y = 6

 

1..32.  l1: x + 4y = 14

l2: 4x - y = 5

l3: 3x + 2y = 1

 

1.33.   l1: 2x - y = 6

l2: 4x + 8y = -8

l3: x + 6y = -2

 

1.34.   l1: 4x - 3y = 5

l2: 3x + 4y = 10

l3: x + y = 2

 

1.35.   l1: 6x - y = 11

l2: -x + 6y = 4

l3: x + y = 10

 

1.36.   l1: x + 8y = 10

l2: -8x + y = -15

l3: x + y = -6

 

1.37.   l1: 7x - y = 5

l2: x + 7y = 15

l3: x + 3y = 11

 

1.38.   l1: x + 10y = 14

l2: -10x + y = -39

l3: x + y = -6

 

1.39.   l1: 2x + 4y = 6

l2: 6x - 3y = 3

l3: x + y = 5

 

1.40.   l1: 12x + y = 10

l2: -x + 12y = -23

l3: x + y = 10

 

1.41.   l1: 8x + y = 10

l2: x - 8y = -15

l3: x + y = -6

 

1.42    l1: 3x + 4y = 12

l2: -4x + 3y = 9

l3: 2x - y = 5

 

1.43    l1: 4x + y = 5

l2: -x + 4y = 3

l3: x - y = 9

 


 



  

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