Kylabtr801 Kylabtr801
  • 03-03-2020
  • Mathematics
contestada


Solve the system of linear equations using elimination.

−2x − y = 3
−9x − y = 17


A)
(2, 1)


B)
(2, −1)


C)
(−2, 1)


D)
(−2, −1)


PLEASE HELP I NEED IT BY TODAY

Respuesta :

amna04352
amna04352 amna04352
  • 03-03-2020

Answer:

C (-2,1)

Step-by-step explanation:

−2x − y = 3 (1)

−9x − y = 17 (2)

(1) y = -2x - 3

(2) y = -9x - 17

-2x - 3 = -9x - 17

7x = -14

x = -2

y = -2(-2) - 3

y = 4 - 3

y = 1

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