Suppose that the relationship between price, P, and quantity, Q, is given by the equation Q = 50 - 5P. Which of the following equations correctly represents solving Q = 50 - 5P for P? O P = 50 - 50 O P = 10 - =Q O P = 50 + Q O P = 50 - Q O P = 10 - 50Plot the relationship between P and Q on the following graph. Note: Price (P) is on the vertical axis and quantity (Q) is on the horizontal axis. 40 35 30 25 20 PRICE 15 10 o 5 1o 15 2o 25 30 35 40 QUANTITY The slope of this line is V . Suppose that the P in this equation refers to the price of a magazine subscription, and the Q refers to the number of magazine subscriptions sold. Read the following statement carefully: \"When the price of a magazine subscription goes up, fewer people subscribe to the magazine." Which of the following best summarizes the pattern of causality suggested by this statement? 0 A change in P causes a change in Q. Q The relationship between P and Q is not a causal relationship. 0 A change in Q causes a change in P