1. If y varies directly as x, what is true of the variables x and y?
a. x and y remain constant
b. as x increases, y decreases
c. x and y increase together
d. all of the above
2. The cost Cof fish varies directly as its weight w. Using k as the constant of variation what is the equation of
the variation?
a. C = kw
b. C = k/w
c. C=k+w
d.C= 3
3. Which of the following is an example of inverse variation?
a. xy = 8
b.y = 10x c. X= 7/2 d.y= 3/x
4. If y varies inversely as x, what is true of the variable x and y?
a. x and y remain constant
b. as x increases, y decreases
c. x and y increase together d. all of the above
5. The weight W of a person varies inversely as its size s. Using k as the constant of variation what is the
equation of the variation?
a. W = ks
b. W = k/s c. W=k+s
d. W = s/k
6. How much will a box of 400 candies cost if each candy is sold at Php 2.00 each?
a. Php 400.00
b. Php 300.00
c. Php 200.00
d. Php 100.00
7. If y varies directly as x, and y = 40 when x =10, find y when x = 15.
b. 40
C. 50
d. 60
8. If y varies directly as x and y=28 when x = 3, find the constant of variation.
b.7
c. 28/3
d. 28/3 x
9. If y varies inversely as x, and y = 44 when x = 5, find y when x = 40.
a, y = 2/11
b.y = 11/2
d. y = 22
10. If y varies inversely as x and y= when x = 5, find y when x = 10.
b. 10
d.1/10
11. If S workers can make 30 chairs a day, how many workers are needed to make 90 chairs a day?
b. 20
d. 10
12. If kilogram of dried fish cost Php 65.00, how much will 3 kilograms of dried fish cost?
a. Php 780.00
b. Php 845.00
c. Php 975.00
d. Php 1000.00
13. If 8 workers can complete a certain job in 5 days, how many days can 10 workers complete a certain jot
a. 3
b. 4
6.5
d. 6
14. If 5 workers can make 150 masks a day, how many workers are needed to complete a daily order of 30
masks a day for the frontliners?
b. 11
.8
models a quadratic function?
a. 7x
c. y = 11
c. 5
a. 50
C. 15
a. 25
c. 10 d
a. 15​