Solving systems of equations by Elimination word problem please help

What are the steps to solving the inequality 3b + 8 ≥ 14?

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?

Which equation is represented by the graph below?