Answer:
So you just got to graph the functions? Straight forward.
Explanation:
The black is the x + 1 and the dark red is 2x, the way you do it is of course Rise over Run, where you move up two and go over right, and for the x + 1, you start at 1 on the y axis, and then move up 1 and right 1, since the slope, being x, is just plain ol' one.
If you don't understand anything, please comment. Thanks.