alizpalie alizpalie

23-01-2018
Mathematics

contestada

Is the point a solution to the system of equations?. x + y = −3 2x − y = 6. (2,−5) (1,−4)

Respuesta :

choixongdong choixongdong

23-01-2018

x + y = −3
2x − y = 6
-------------------------add
3x = 3
x = 1

x + y = −3
1 + y = −3
y = -4

x = 1 and y = -4

answer
(1,−4)

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