2019cwelsh 2019cwelsh
  • 24-07-2017
  • Mathematics
contestada

Solve the system algebraically.

3x - 2y - 1 = 0
y = 5x + 4

What is the solution?


{(-9/7,-17/7)}


{(9/7,17/7)}


{(9/7,-17/7)}

Respuesta :

freelilboosie12 freelilboosie12
  • 24-07-2017
3x -2(5x + 4) - 1 = 0

3x - 10x -9 = 0

3x - 10x = 9 

-7x = 9 x= 9/-7 x=-9/7

y = 5(-9/7) + 4 

y= -17/7

The answer is A
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