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  • 23-02-2019
  • Mathematics
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  • 23-02-2019

Answer:

1. One solution

2. Infinite solution

3. No solution

Step-by-step explanation:

1. y = -4x - 5.........eq 1

+ (y = -4x + 1)..........eq 2

---------------------

2y = -4

divide by 2

2y/2 = -4/2

y = -2

solve for x

put y in any equation

from equation 1

y = -4x - 5

-2 = -4x -5

combine the like terms

-2+5 = -4x

3 = -4x

divide by -4

3/-4 = -4x/-4

x = -0.75

One solution

2. -3x + y = 7

   2x - 4y = -8

Infinite solution

3. 3x - y = 4

 6x - 2y =8

No solution

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