# Variation

## Quiz by Angkol

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- Q1
If y varies directly as x, illustrated by y = kx, what is this type of variation?

Joint

Direct

Inverse

Combined

30s - Q2
The length (L) of the pendulum is directly proportional to the square of the time (t) it takes to swing from one side to the other. Which mathematical equation can be applied to this situation?

$L=k\backslash sqrt\{x\}$

$P=kt^2$

$L=\backslash frac\{k\}\{t^2\}$

$L=\backslash frac\{k\}\{\backslash surd\; t\}$

30s - Q3
If a varies directly as b, and a = 12 when b = 3, what is the equation of variation?

$a=3b$

$a=4b$

$a=2b$

$a=5b$

30s - Q4
What mathematical symbol best describes the relationship of the values of x and y in the table?

$y=\backslash frac\{-24\}\{x\}$

$y=\backslash frac\{24\}\{x\}$

$y=-24x$

$y=24x$

30s - Q5
A mailman can sort out 738letters in 6 hours. If the number of letters varies directly as the number ofworking hours, how many letters can be sorted on 9 hours?

6642

123

738

1107

30s - Q6
The number of days needed in repairing a house varies inversely as the number of men working. It takes 15days for 2 men to repair the house. How many men are needed to complete the job in 6 days?

4

5

7

6

30s - Q730s
- Q830s
- Q9
Which of the following equations will illustrate the given graph?

$y=3x$

$y=5x$

$y=2x$

$y=4x$

30s - Q1030s