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Please help giving BRAINLYEST
Which system of equations has only one solution?
4 x + 2 y = 8. Negative 4 x minus 2 y = 3.
Negative 5 x + y = 6. 5 x minus y = negative 6.
Negative 3 x + 4 y = 2. 3 x minus 4 y = 0.
2 x + 4 y = 6. 3 x minus 4 y = 9.

Respuesta :

amna04352

Answer:

Last one:

2 x + 4 y = 6. 3 x minus 4 y = 9.

Step-by-step explanation:

2x + 4y = 6

3x - 4y = 9

4y = 3x - 9

2x + 3x - 9 = 6

5x = 15

x = 3

4y = 3(3) - 9

4y = 0

y = 0

Only one solution, which is (3,0)

wegnerkolmp2741o

Answer:

2x+4y =6

3x -4y =9  one solution

Step-by-step explanation:

4x+2y =8

-4x-2y =3

Adding these together

0 =11  False no solutions

-5x +y =6

5x -y = -6

Adding these together

0 = 0  True we get Infinite solutions

-3x+4y =2

3x-4y =0

Adding these together

0=2  False   no solutions

2x+4y =6

3x -4y =9

Add these together

5x =15

Divide by 5

5x/5 = 15/5

x =3

2(3) +4y =6

10 +4y =6

4y = 0

y = 0

(3,0)

One solution

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