4. For two quantities, x and y, an increase in x causes an increase in y as well. Similarly, a decrease in x causes a decrease in y. What kind of variation is being described here?
a. Direct
b. Inverse
c. Joint
d. Combined
5. For two quantities, x and y, an increase in x causes a decrease in y or vice versa. What kind of variation is being described here?
a. Direct
b. Inverse
c. Joint
d. Combined
6. Aubrey and Booth are figuring out a way to balance themselves on a seesaw. Aubrey, who weighs 15kg, sits 2 meters from the fulcrum. Booth, who weighs 20kg, tried sitting at different distances from the fulcrum in order to balance the weight of James. To know how far from the fulcrum Booth should sit, which equation are you going to use?
a. 15 (20) = 2x
b. 15x = 20 (2)
c. 15 (2) = 20%
d. x = 2(15)(20)
7. Which variation statement translates to b = ?
a. b varies directly as c and d inversely as e.
b. b varies jointly as c and d and inversely as e.
c. b varies jointly as c, d, and e.
d. b varies directly as c, d, and e.