SOLUTION: Determine the solution. x+y=1 x+2y=0 The solution is __? (Type an ordered pair) The dot on the graph is (2,-1)

Algebra ->  Graphs -> SOLUTION: Determine the solution. x+y=1 x+2y=0 The solution is __? (Type an ordered pair) The dot on the graph is (2,-1)      Log On


   

Question 947455: Determine the solution.
x+y=1
x+2y=0
The solution is __?
(Type an ordered pair)
The dot on the graph is (2,-1)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Subtract the first equation from the second to eliminate x.
x%2B2y-x-y=0-1
y=-1
Then use either equation to solve for x.
x-1=1
x=2
(2,-1)