Positive economics deals with a. Variables are a. magnitudes that are constant or fixed. The difference between an economic good and a free good is that free goods a. are provided by the federal government. If variable X goes down as variable Y goes down, the X and Y are a. directly related. The concept that relates how much one variable changes as another variable changes is a. slope.
Capital includes such things as a. money.
As more cars are produced, the opportunity cost of each additional car is greater than for the preceding unit. As more cars are produced, the opportunity cost of each additional car is less than for the preceding unit. As more cars are produced, the opportunity cost of each additional car is the same as for the preceding unit. People pay higher prices for cars the higher the costs of cars. A market is any arrangement by which people exchange goods but not services.