franchescamena912 franchescamena912

22-11-2019
Mathematics

contestada

X+y=3
8x+y=-4
System of equation by graphing

Respuesta :

Yang100 Yang100

01-12-2019

Answer:

x=-1, y=4. (-1, 4).

Step-by-step explanation:

x+y=3

8x+y=-4

--------------

y=3-x

8x+(3-x)=-4

8x+3-x=-4

7x+3=-4

7x=-4-3

7x=-7

x=-7/7=-1

-1+y=3

y=3-(-1)=3+1=4

x=-1, y=4. (-1, 4).

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