I need help please math

Create a real-life situation and create a system and show how it might be modeled algebraically with a system of equations (or inequalities) show all work include a few sentences explaining the situation, your variables of choice and what each represents, and how you would set it up and solve it algebraically. !

What is x and y intercepts for y=x+7

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a