SOLUTION: Solve for x and y:
x*2 + y = 7
x + y*2 = 11
I can see that the answer is x = 2, y = 3 BUT how can it be solved other than by graphing?
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-> SOLUTION: Solve for x and y:
x*2 + y = 7
x + y*2 = 11
I can see that the answer is x = 2, y = 3 BUT how can it be solved other than by graphing?
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Question 77189: Solve for x and y:
x*2 + y = 7
x + y*2 = 11
I can see that the answer is x = 2, y = 3 BUT how can it be solved other than by graphing? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Solve for x and y:
x*2 + y = 7
x + y*2 = 11
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Try using substitution:
y=7-x^2
x + (7-x^2)^2=11
x + 49 -14x^2+ x^4 = 11
x^4-14x^2+x+38=0
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Using synthetic substitution you can find that
x=2 is the only integer solution.
If x=2, y=3
Cheers,
Stan H.
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