Pj4x Pj4x
  • 10-12-2019
  • Mathematics
contestada

which ordered pair is a soulution of the equation 2x-y=9

Respuesta :

soommro soommro
  • 11-12-2019

Answer:

(0,-9)

Step-by-step explanation:

2x-y=9 is firsl equation

x=9+y is second equation

put value of x in 1st equation

2(9+y)-y=9

18 +2y-y=9

18+y=9

y=9-18

y=-9

put value of y in st equation

2x-(-9)=9

2x+9=9

x=0

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