kikdddd
kikdddd kikdddd
  • 06-04-2017
  • Mathematics
contestada

3x – y = 4 2x + y = 6 (2, 2) (3, 0) (–1, –7) (0, –4)

Respuesta :

malcolmfernandes10
malcolmfernandes10 malcolmfernandes10
  • 06-04-2017
The answer is 2,2

as 3*2 - 2 = 4
ans 2*2 +2 = 4 

So it satisfies both eqautions

Answer Link
ghanami
ghanami ghanami
  • 06-04-2017
hello :

3x – y = 4....(1)
 2x + y = 6.....(2)
by (1) : y=3x-4
by(2) :  y = -2x+6
3x-4 = -2x+6
5x =10 ..... x =2
y = 3(2)-4 =2

(2, 2) has solution of system
Answer Link

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