SOLUTION: graph the linear system and estimate the solution. then check the solution algebraically . x+y=3 2x+y=4

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Question 661654: graph the linear system and estimate the solution. then check the solution algebraically .
x+y=3
2x+y=4
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
x%2By=3
2x%2By=4+

+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+-x%2B3%2C+-2x%2B4%29+
as we can see, intersection is at (1,2); so, the solution is x=1 and y=2
now we will check this solution:
x%2By=3......plug in x=1 and y=2
1%2B2=3
3=3.....highlight%28true%29

2x%2By=4+
2%2A1%2B2=4+
2%2B2=4+

4=4+....highlight%28true%29
so, our solution is correct