Multiple Choices: Read and analyze each statement carefully. Write the letter of the correct answer on the space provided before the number. s: lag er! e al ea ne us 1. Which of the following statements shows a direct variation? a. The number of hours to finish a job to the number of men working b. The age of a car to its resale value. c. The number of persons sharing a pie to the size of the slices of the pizza. d, The amount of money raised in a concert to the number of ticket sold. he 2. Which of the following does not represent a direct variation? a. The more time I drive ( at a constant rate), the more distance I cover. b. The more hours you play online games, the more money you pay c. The more time you study, the higher scores you will get in the exam. d. The number of hours to finish a job to the number of men working. TV TO 3. The cost c varies directly as the number n of pencils is written as a. c = kn b. k = cn k d. ca c. n = с a 4. Which is an example of a direct variation? a. xy = 10 b. y = 2/x c. y = 5x d. 2/y = x 5. What happens to S when t is tripled in the equation S = 2t? a. Sis halved b. S is tripled c. S is doubled d. S becomes zero YA 1. S 10 9.51 6. Which of the following does the graph model? a direct variation b. inverse variation c. joint variation d. combined variation 115 B х 6 10 7. Which is the equation that describes the following table of values? b. y = 2x 1 5 c. y = 1/3 x d. xy = 200 y 2 10 a. y = -2x 12 20 8. An encoder can type n words in t hours. The formula that relates n to t is n = k/t. What kind of variation is it? a. direct variation b. inverse variation c. joint variation d. combined varia 9. Using the table of values from item number 11, what is the constant of variation? b, -2 c. Ya d.-1/2 a. 2