The document is a practice test containing math problems involving relationships between variables. It includes 7 multiple choice questions where students must match relationships described in Column A to the corresponding equation in Column B. The relationships include variables that vary directly, inversely, and jointly with other variables.

1. Pangasinan State University
Bayambang Campus
Bayambang, Pangasinan
Second Periodical Test
PART I.
A. Matching Type
Match each relationship in column A to its corresponding variation statement in
column B. Write the letter of your answer in the blank provided.
Column A Column B
_____ 1. The cost (x) varies directly A. x = ky
as the number of pencil (y). B. x = akyz
_____ 2. The speed (x) of a car is inversely C. 𝑥 =
𝑘𝑦
𝑧2
proportional to time (y) traveled. D. 𝑥 =
kz√y
𝑎
_____ 3. x varies jointly as a, z and y. E. 𝑘 =
𝑥
𝑦
_____ 4. The area of a triangle (x) varies jointly F. 𝑘 =
𝑦
𝑥𝑧
as its base (y) and height (z). G. 𝑥 =
𝑘
𝑦
_____ 5. x varies directly as y and inversely as z. H. 𝑥 =
kzy
𝑎
_____ 6. The acceleration (x) of a moving object
varies directly as the distance (y) it travels I. 𝑥 =
kzy2
𝑎
and inversely as the square of the time (z)
it travels. J. 𝑥 =
ky
𝑧
_____ 7. x varies jointly as z and the square of y
and inversely as a. K. x = kyz