SNNHS G9_Q2_PRETEST

Quiz by JOHN ANTHONY P. SANTOS

Mathematics

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40 questions
• Q1

Which is an example of direct variation?

𝑦 =$\frac\left\{2\right\}\left\{x\right\}$

𝑥 = $\frac\left\{1\right\}\left\{2y\right\}$

𝑦 = 2𝑥

𝑥𝑦 = 2

30s
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• Q2

Which is an example of inverse variation?

𝑥 = −4𝑦

𝑦 = 4𝑥

𝑥 =  $\frac\left\{y\right\}\left\{4\right\}$

𝑦 = $\frac\left\{4\right\}\left\{x\right\}$

30s
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• Q3

The length 𝑙 of a rectangular field varies inversely as its width 𝑤 is written as ____.

𝑤 = $\frac\left\{k\right\}\left\{l\right\}$

𝑙 =$\frac\left\{k\right\}\left\{w\right\}$

𝑙 = 𝑘𝑤

𝑤 = 𝑘𝑙

30s
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• Q4

If 𝑦 varies inversely as 𝑥 and 𝑦 = 12 when 𝑥 = 4, find 𝑦 when 𝑥 = 3.

16

15

18

17

30s
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• Q5

What mathematical equation describes the graph at the right?

𝑦 varies inversely as 𝑥, where 2 is the constant of variation

𝑦 varies directly as 𝑥, where 2 is the constant of variation

𝑦 varies inversely as 𝑥, where 12 is the constant of variation

𝑦 varies directly as 𝑥, where 12 is the constant of variation

30s
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• Q6

Which equation represents “y varies directly as x andz”?

𝑦 = $\frac\left\{kz\right\}\left\{x\right\}$

𝑦 = 𝑥𝑧

𝑦 = 𝑘𝑥𝑧

𝑦 = $\frac\left\{kx\right\}\left\{z\right\}$

30s
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• Q7
30s
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• Q8

It is defined as the variation where a quantity depends on two or more other quantities, whereas one quantity varies directly while the other quantity varies inversely.

Inverse

Combined

Joint

Direct

30s
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• Q9

“The Interest earned by a savings account of Mr. Viray is jointly proportional to the Time and its Principal amount. After one quarter(3 months), the interest for a principal amount of Php 6,000 is Php 120.” How much interest is earned within 5 months if the principal amount is Php 7,500?

Php 200

Php 300

Php 250

Php 350

30s
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• Q10

In the expression 3𝑥², 2 is called _____.

Literal Coefficient

Numerical Coefficient

Constant term

Exponent

30s
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• Q11

Which of the following is TRUE?

(𝑏−5)0= 𝑏−5

𝑥6 ∙ 𝑥3 = 𝑥9

𝑎0𝑏2 = 𝑎𝑏0

$\frac\left\{^\left\{x^\left\{-2\right\}\right\}\right\}\left\{x^5\right\}=x^3$

30s
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• Q12
30s
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• Q13
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• Q14
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• Q15
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• Q16
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• Q17
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• Q18
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• Q19
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• Q20
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