SOLUTION: Solve by Graphing x+2y=4 y=x-4 They have to be graphed on 1 graph where they intersect.

Algebra ->  Graphs -> SOLUTION: Solve by Graphing x+2y=4 y=x-4 They have to be graphed on 1 graph where they intersect.       Log On


   

Question 985548: Solve by Graphing
x+2y=4
y=x-4
They have to be graphed on 1 graph where they intersect.
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
x+2y=4 (Red line on graph)
y=x-4 (Green line on graph)
.
+graph%28+800%2C+800%2C+-10%2C+10%2C+-10%2C+10%2C+%28-1%2F2%29x%2B2%2C+x-4%29+
.
Solution (intersection): (4,0)
.
CHECK:
x+2y=4
x+2(x-4)=4
x+2x-8=4
3x=12
x=4
.
y=x-4
y=4-4
y=0
.
Solution (Substitution): (4,0)