Question 985548
x+2y=4 (Red line on graph)
y=x-4 (Green line on graph)
.
{{{ graph( 800, 800, -10, 10, -10, 10, (-1/2)x+2, x-4) }}}
.
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)