In maths what is 17x - 12x​

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

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.

Aline passes through the point (–7, 5) and has a slope of 1/2 which is another point that the line passes through?