Who can help me ? please

Do not comment if you aren’t going to . 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. !

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

Find the solution of this system of equation -7x+y=-20 9x-3y=36