What is the a value of the vertex form...

y = (x - 3 )^2 - 36

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

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

Is the point (0, 8) on the x-axis or y-axis? how do you know?