SOLUTION: solve the system by graphing. x - 2y = 8 and x + y = -1

Algebra ->  Customizable Word Problem Solvers  -> Geometry -> SOLUTION: solve the system by graphing. x - 2y = 8 and x + y = -1      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 81925: solve the system by graphing.
x - 2y = 8 and x + y = -1
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
x-2y=8, -2y=-x+8, y=-x/2+8/-2, y=-x/2-4
x=y=-1, y=-x-1
+graph%28+300%2C+200%2C+-6%2C+7%2C+-10%2C+10%2C+y+=+-x%2F2+-4%2C+y+=+-x+-1%29+ (graph 300x200 pixels, x from -6 to 7, y from -10 to 10, y = -x/2 -4 and y = -x -1).
x=6, y=-7