Asked by Cody
3x + y = 3
x + y = 2
Solve the systems of equations.
Options: x=1/2 y=3
x=3 y=1/2
x=1/2 y=3/2
x=3/2 y=1/2
x + y = 2
Solve the systems of equations.
Options: x=1/2 y=3
x=3 y=1/2
x=1/2 y=3/2
x=3/2 y=1/2
Answers
Answered by
MathMate
Unless you'd like to solve the problem using substitution, which is not hard to do, you could substitute the given answers into the given equations.
From the second equation, x+y=2, we can eliminate the first and the second answer, since the proposed values of x and y add up to more than 2.
Between the answers 3 and 4, it is obvious that the fourth choice does not satisfy the first equation. So the answer is #3.
From the second equation, x+y=2, we can eliminate the first and the second answer, since the proposed values of x and y add up to more than 2.
Between the answers 3 and 4, it is obvious that the fourth choice does not satisfy the first equation. So the answer is #3.
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