What is the solution of the system of equations? y = –2x + 8 y = x – 4

y = –2x + 8 
y = x – 4

We can use substitution.
-2x+8 = x-4
3x=12
x=12/3
x=4

y = x – 4
y=4-4=0
y=0

Solution of the system x=4,y=0,
it can be written as (4,0).