Jka9yla6langa Jka9yla6langa
  • 22-02-2017
  • Mathematics
contestada

{y=x−75x+2y=7
Use the substitution method.

(0, −7)
(3, −4)
(7, 0)
(−1, −8)

Respuesta :

wolf1728
wolf1728 wolf1728
  • 24-02-2017
A) y=x−7
B) 5x+2y=7
A) x = y + 7
Substituting this into B)

y + 7 +2y = 7

3y = 0
y = 0
x = 7

Answer is C (7,0)

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