6. Find the Midpoint of (-5.-4) and (-9,-4)

if you could show your work that'd be great​

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. !

Which function is represented by the graph

Solve the system of equations. y= 2x y= x^2 - 15