SOLUTION: Solve each system by substitution. y=-3x+9 -4x+2y=-2

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: Solve each system by substitution. y=-3x+9 -4x+2y=-2      Log On


   

Question 391434: Solve each system by substitution.
y=-3x+9
-4x+2y=-2
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,         

Solving the system by substitution

y = -3x+9   green line

-4x+2y=-2   blue line

-4x+2(-3x+9)= -2

-4x -6x + 18 = -2

   -10x = -20

      x = 2

      y = -3x+9

      y = -6+9

      y = 3