Directions: Read each item carefully. Choose the letter of the correct answer. Write your answer on a separate sheet of paper.

1. The cost o varies directly as the number n of ballpen is written as k k c. N= с C b. k=cn a c= kn d. n

2. Which of the following represents the statement, m varies inversely as j? bm= - 4 d. m = = kj a j = km c. k=1 m

3. The speed r of a moving object is inversely proportional to the time travelled is written as K b.r= t a. r = ki c. 1 = kr dat

4. If p varies directly as q and p = 24 when q =- 8, then k is b. - . c. d. 3 a. -3 3

5.A car travels a distance of d km in 1 hours. The formula that relates d to t is d = kt. What kind of variation is it? a. direct b. inverse c. joint d. combined

6. The amount (A) of money raised in a concert to the number (n) of tickets sold is an example of what kind of variation. a. direct b. inverse c. joint d. combined

7. Which of the following is an example of a direct variation? d = x 2 b. y = χ c. xy = 10 y a. y = 6x

8. In the variation equation M = 2t. What happens to M when t is doubled? c. Mis halved. a. Mis tripled d. M is divided by 3. b. Mis doubled.

9. y varies directly as x and y = 42 when x = 7. Find the constant of variation. d. 24 b. 12 c. 18 a. 6 k ?

10. What happens to y when x is tripled in the relation y=- Y c. y is halved a. y is tripled b.y is doubled d. y is divided by 3​