Maggie, you must either share the graphs or forget about them and solve the entire problem yourself with your own graph.
12 < 3b reduces to 4<b, and 2b + 14<4 reduces to 2b < -10, or b < -5.
You have only one variable here (b), so your graph will be one-dimensional (a horizontal line which is the b-axis).
First place a circle (open circle) at b = -5, and then draw an arrow to the left from b = -5. Next, place a circle at b = 4, and then draw an arrow to the right from b = 4. Note that there will be no arrow between b=-5 and b=4.
