2nd Quarter : PreTest in Mathematics 10

Quiz by Ma. Carmela D. Laudit

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Q 1/40
Score 0
Which is an example of direct variation?
29

𝑥 = $\frac{1}{2y}$
𝑦 = 2𝑥
𝑥𝑦 = 2
𝑦 = $\frac{2}{x}$

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40 questions

Show answers

Q1
Which is an example of direct variation?
𝑥 = $\frac{1}{2y}$
𝑦 = 2𝑥
𝑥𝑦 = 2
𝑦 = $\frac{2}{x}$
20s
Q2
Which is an example of inverse variation?
𝑦 = $\frac{4}{x}$
𝑥 = −4𝑦
𝑦 = 4𝑥
𝑥 = $\frac{y}{4}$
20s
Q3
The length 𝑙 of a rectangular field varies inversely as its width 𝑤 is written as ____.
𝑙 = $\frac{k}{w}$
𝑙 = 𝑘𝑤
𝑤 = 𝑘𝑙
𝑤 = $\frac{k}{l}$
20s
Q4
If 𝑦 varies inversely as 𝑥 and 𝑦 = 12 when 𝑥 = 4, find 𝑦 when 𝑥 = 3.
17
18
16
15
20s
Q5
What mathematical equation describes the graph below?
𝑦 varies directly as 𝑥, where 12 is the constant of variation
𝑦 varies inversely 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 2 is the constant of variation
30s
Q6
Which equation represents “y varies directly as x and z”?
𝑦 = $\frac{kx}{z}$
𝑦 = 𝑘𝑥𝑧
𝑦 = 𝑥𝑧
𝑦 = $\frac{kz}{x}$
20s
Q7
20s
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.
Combined
Direct
Joint
Inverse
20s
Q9
“The Interest earned by a savings account of Mr. Viray is jointly proportional to the Time and its Principal amount. After one quarter (3months), 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 250
Php 300
Php 200
Php 350
60s
Q10
In the expression 3𝑥², 2 is called _____.
Literal Coefficient
Constant term
Numerical Coefficient
Exponent
15s
Q11
Which of the following is TRUE?
(𝑏−⁵)⁰= 𝑏⁻⁵
$\frac{x^{-2}}{x^5}=x^3$
𝑎⁰𝑏² = 𝑎𝑏⁰
𝑥⁶ ∙ 𝑥³ = 𝑥⁹
20s
Q12
20s
Q13
30s
Q14
45s
Q15
30s

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