Solve the system of equations. x=-2y+1 and x+2y=9. show work

Find the value of x for which abcd must be a parallelogram -9-6x x-30

Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers.a) one of the 400 passengers is selected uniformly at random.let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.