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Tina wrote the equations 3 x minus y = 9 and 4 x + y = 5. What can Tina conclude about the solution to this system of equations?
(–3, 2) is a solution to the system of linear equations.
(–2, 3) is a solution to the system of linear equations.
(2, –3) is a solution to the system of linear equations.
(3, –2) is a solution to the system of linear equations.

Respuesta :

laurellee27

Answer:

(2, –3) is a solution to the system of linear equations.

Step-by-step explanation:

3x - y = 9

4 x + y = 5.

Add the equations

7x = 14

x = 2

Substitute it back into either original equation to find x

3(2) - y = 9

6 - y = 9

y = -3

4(2) + y = 5.

8 + y = 5

y = -3

x = 2

y = -3

(2, -3)

(2, –3) is a solution to the system of linear equations.

Answer:

its c

Step-by-step explanation:

i took the test.

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