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

300sEditDelete - 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

300sEditDelete - Q3
What is the value of 1

^{2}?1

1/2

12

-1/2

300sEditDelete - Q4
Rewrite 3

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

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

$\backslash sqrt\{6\}$

$\backslash sqrt\{3\}$

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

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

xy = 10

y = 5x

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

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

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

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

$w=kb$

$w=kbc$

300sEditDelete - Q7
1. Simplify: 8x

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

^{2}yz8xyz

8x

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

^{2}300sEditDelete - Q8300sEditDelete
- 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

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

c = k/n

x = ky/z

a = kbc

r = kt

300sEditDelete - Q11300sEditDelete
- Q12
Which of the following illustrates direct square variation?

w =kbc

^{2}w = k/b

^{2}w = kb

^{2}w = kc/b

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

undefined

1

negative

0

300sEditDelete - 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

300sEditDelete - Q15
Inverse means

zero

constant

opposite

direct

300sEditDelete - Q16
Translate the statement

*m***varies****directly as***x***and inversely as the cube of**.*y*m = y

^{3}/kxm = kxy

^{3}m = kx/y

^{3}m = x/ky

^{3}300sEditDelete - Q17300sEditDelete
- Q18
If y varies directly as x, and y = 12 when x = 4, find y when x = 12.

4

3

48

36

300sEditDelete - Q19
What is the value of 3

^{0}4^{-2}?1/16

1/12

16

12

300sEditDelete - Q20
What is the principal root of 25

^{1/2 }?5

625

-5

12.5

300sEditDelete