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05-02-2020
Mathematics

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QUIZ
1. Solve the system using elimination.
x - y = -5
3x + y = 1
A (-1,4)
B (-3, 4)
C (-1,2)
D (2, -2)

Respuesta :

LMarianna LMarianna

05-02-2020

eliminating y

x - y = -5

3x + y = 1

________ +

4x = -4

x = -1

eliminating x

• x - y = -5 ....... (x3)

3x + y = 1 ....... (x1)

• 3x - 3y = -15

3x + y =1

___________ -

-4y = -16

y = 4

A. (-1, 4)

Answer Link

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