1) It is a variation in which an increase in x causes an increase in y as well. a) Inverse Variation b) Direct Variation c) Joint Variation 2) What is Joint variation? a) Same as direct variation but with two or more variables. b) Combination of direct and inverse variation. c) The decrease of one variable results to an increase on another variable. 3) Which variation statement corresponds to the mathematical expression y=kx? a) y varies inversely as x. b) y varies jointly as x. c) y varies directly as x. 4) What is the correct variation statement for y=k/x? a) y varies directly as x. b) y varies inversely as x. c) y varies jointly as x and z. 5) If the mathematical expression is z=kxy, what is the corresponding variation statement? a) z varies directly as x and inversely as y. b) z varies inversely as x and y. c) z varies jointly as x and y. 6) Which variation statement corresponds to the equation y=kx/z? a) y varies jointly as x and z. b) y varies directly as x and inversely as z. c) y varies inversely as x and directly as z. 7) Which of the following equation shows inverse variation? a) y=5x b) y=5/x c) y=5x/z 8) x varies jointly as s and t” can be written as a) x=k/st b) x=ks/t c) . x=kst 9) If y varies directly as x, what is the equation in solving for k? a) k=xy b) k=y/x c) k=x/y 10) y varies directly as x and y = 36 when x = 9. What is the equation of variation? a) y=4/x b) y=6/x c) . y=4x 11) y varies inversely as x and y = 4 when x = 20. What is y when x = 8? a) 10 b) 8 c) 6 12) If 2 kilograms of tomatoes cost 42 pesos, how much will 12 kilograms cost? a) 171 pesos b) 252 pesos c) 420 pesos 13) During harvest season, the owner of the plantation pays Mang Juan Php 18.00 for every 3 pineapples he will gather. How much would Mang Juan receive when he will gather 20 pineapples? a) Php 110.00 b) Php 120.00 c) Php 130.00 14) The time required to clean a classroom varies inversely to the number of students cleaning. If 8 students can clean the room in 40 minutes, in how many minutes can 10 students clean the room? a) 50 minutes b) 40 minutes c) 32 minutes 15) Which of the following is true? a) b) c) 16) Which of the following illustrates expression with rational exponent? a) b) c) 17) Which of the following expressions can be transformed into radical form? a) b) c)

Mathematics 9 Q2

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