You can put this solution on YOUR website! y=x^2-6x+8 (red line)
y=x-4 (green line)
x-4=x^2-6x+8
x^2-6x-x+8+4=0
x^8-7x+12=0
(x-3)(x-4)=0
x-3=0
x=3 answer.
x-4=0
x=4 answer.
y=3-4=-1 answer. (3,-1)
y=4-4=0 answer. (4,0) (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions x^2 -6x +8 and x -4)