Asked by Anonymous
two systems of equations are given below for each system, choose the best description of it solution.
1) the system has no solution
2) the system has a unique solution
3) the system has a infinitity many solutions. they must satisfy the following equation
x+4y=8
-x-4y=-8
-x-2y=4
x+2y=4
1) the system has no solution
2) the system has a unique solution
3) the system has a infinitity many solutions. they must satisfy the following equation
x+4y=8
-x-4y=-8
-x-2y=4
x+2y=4
Answers
Answered by
Dr. Jane
If you add the first two equations, you will get 0 = 0
Any time you have a situation when the variables disappear and you end up with a true statement, there are an infinite number of solutions. Whatever (x,y) works in one equation will also work in the other.
The second set adds to 0 = 8
This is false which means there are no solutions. You cannot find an (x,y) that will work in both equations.
Any time you have a situation when the variables disappear and you end up with a true statement, there are an infinite number of solutions. Whatever (x,y) works in one equation will also work in the other.
The second set adds to 0 = 8
This is false which means there are no solutions. You cannot find an (x,y) that will work in both equations.
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