# 2nd Quarter Summative Test

## Quiz by Maria Resureccion M. Borja

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- Q1
1. In variation, k stands for

quotient

product

difference

constant of variation

300s - Q2
The statement “y varies directlyas x and inversely as thesquare of z” is an example of

direct variation

combined variation

inverse variation

joint variation

300s - Q3
What is the value of 1

^{2}?1

1/2

12

-1/2

300s - Q4
Rewrite 3

^{2/3}in radical form.$\backslash sqrt[3]\{^\{3^2\}\}$

$\backslash sqrt[3]\{3\}$

$\backslash sqrt\{6\}$

$\backslash sqrt\{3\}$

300s - Q5
Which of these equations illustrates direct variation?

$\backslash frac\{2\}\{y\}=x$

xy = 10

y = 5x

y = $\backslash frac\{2\}\{x\}$

300s - Q6
Which of these equations illustrates combined variation?

$w=\backslash frac\{k\}\{b\}$

$w=\backslash frac\{kc\}\{b\}$

$w=kb$

$w=kbc$

300s - Q7
1. Simplify: 8x

^{2}y^{0}z^{0}8x

^{2}yz8xyz

8x

^{2}y^{0}z^{0}8x

^{2}300s - Q8300s
- Q9
The “speed r of a moving object is inversely proportional to the time t travelled”can be written as

t = kr

$\backslash frac\{r\}\{k\}=t$

$r=\backslash \; \backslash frac\{k\}\{t\}$

r = kt

300s - Q10
Which of the following is an example of a joint variation?

c = k/n

x = ky/z

a = kbc

r = kt

300s - Q11300s
- Q12
Which of the following illustrates direct square variation?

w =kbc

^{2}w = k/b

^{2}w = kb

^{2}w = kc/b

^{2}300s - Q13
If the exponent of a certain base is zero, then the value is

undefined

1

negative

0

300s - Q14
What happens to T when h is doubled in the equation T = 4h?

T is halved

T is tripled

T is doubled

a. T becomeszero

300s - Q15
Inverse means

zero

constant

opposite

direct

300s