SOLUTION: Solve the linear system: y=2x+1 -2x+3y=-9

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: Solve the linear system: y=2x+1 -2x+3y=-9       Log On


   

Question 121883: Solve the linear system:
y=2x+1
-2x+3y=-9

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
substituting the value of y from the first equation into the second __ -2x+3(2x+1)=-9

-2x+6x+3=-9 __ 4x=-12 __ x=-3

y=2(-3)+1 __ y=-5