SOLUTION: solve each system..(please) and (thanks:) 1. y=2x+8 y=3x-1 2. 2x-y=2 2x-2y=4 3. -x+y=2 2x+y=-1

Algebra ->  Algebra  -> College  -> Linear Algebra -> SOLUTION: solve each system..(please) and (thanks:) 1. y=2x+8 y=3x-1 2. 2x-y=2 2x-2y=4 3. -x+y=2 2x+y=-1       Log On

 Algebra: Linear Algebra (NOT Linear Equations) Solvers Lessons Answers archive Quiz In Depth

 Question 176605: solve each system..(please) and (thanks:) 1. y=2x+8 y=3x-1 2. 2x-y=2 2x-2y=4 3. -x+y=2 2x+y=-1 Answer by stanbon(57307)   (Show Source): You can put this solution on YOUR website!1. y=2x+8 y=3x-1 --- Substitute to get: 2x+8 = 3x-1 x = 9 --- Since y = 2x+8, y = 2*9+8 = 26 ---------------------------------- 2. 2x-y=2 2x-2y=4 solve each for y: y = 2x-2 y = x-2 Substitute: 2x-2 = x-2 x = 0 -------- Since y = x-2, y = 0-2 = -2 --------------------------------- 3. -x+y=2 2x+y=-1 Solve each for Y y = x + 2 y = -2x-1 Substitute to get: x+2 = -2x-1 3x = -3 x = -1 Since y = x+2, y = -1+2 = 1 ============================= Cheers, Stan H.