SOLUTION: I need help on steps for solving a system of equations in substituting, elimination,and graphing method for problem. X+3y=-4 X+y=0 Thank you in advance for your help, I t

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Question 922954: I need help on steps for solving a system of equations in substituting, elimination,and graphing method for problem.
X+3y=-4
X+y=0
Thank you in advance for your help,
I tried to work the problem below
Y=-x+0
X+3(-x+0)=-4
X+-3+0=-4
-2x+0=4
(2,2)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
x+y = 0 leads to y = -x

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x+3y = -4

x + 3(-x) = -4

x - 3x = -4

-2x = -4

x = -4/(-2)

x = 2

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y = -x

y = -2

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The solution as an ordered pair is (2, -2)

Notice how y is -2 and NOT +2.


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Let me know if that helps or not. Thanks.

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