Find the equation for the graph shown

Can someone me with this problem . show your work .

What expression is equivalent to 42x-56y

Val and tony get paid per project. val is paid a project fee of $44 plus $12 per hour. tony is paid a project fee of $35 plus $15 per hour. write an expression to represent how much a company will pay to hire both to work the same number of hours on a project.