SOLUTION: Please help solve. Thanks! Solve the linear system: -2x+y=5 4x-2y=9

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: Please help solve. Thanks! Solve the linear system: -2x+y=5 4x-2y=9       Log On


   

Question 482664: Please help solve. Thanks!

Solve the linear system:
-2x+y=5
4x-2y=9
Found 2 solutions by nochka22, Alan3354:
Answer by nochka22(2) About Me  (Show Source):
You can put this solution on YOUR website!
-2x+y=5
4x-2y=9
Multiply 1st expression by 2, rewrite 2nd expression as is:
-4x+2y=10
4x-2y=9
When you add these expressions: -4x & 4x cancell out; 2y & -2y cancell out.
The resault you get is 0=19, since 0 can not be equal to 19 this is a CONTRADICTION.

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The results of the other tutor,
0 = 19 indicate and that the system in inconsistent.
If you graph them, the lines are parallel, no intersection, no solution.