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OPLAN-TO-SOAR_MATHEMATICS

Quiz by Analene Fullido

Grade 9
Mathematics
Philippines Curriculum: Grades K-10 (MELC)

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40 questions
Show answers
  • Q1

    Which is an example of direct variation? 

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

    xy\ =\ 2

    y\ =\frac{2}{x}

    y\ =\ 2x

    30s
    M9AL-IIa-1
  • Q2

    Which is an example of inverse variation?

    y\ =\ 4x

    x\ =\ -4y

    x\ =\frac{y}{4}

    y\ =\ \frac{4}{x}

    30s
    M9AL-IIa-1
  • Q3

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

    w\ =\ \frac{k}{l}

    l\ =\ kw

    w\ =\ kl

    l\ =\ \frac{k}{w}

    30s
    M9AL-IIa-1
  • Q4

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

    18

    16

    17

    15

    30s
    M9AL-IIa-1
  • Q5

    What mathematical equation describes the graph below?

    Question Image

    𝑦 varies directly as 𝑥, where 2 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 12 is the constant of variation

    30s
    M9AL-IIa-1
  • Q6

    Which equation represents “y varies directly as x and z”?

    y\ =\ \frac{kz}{x}

    y\ =\ kxz

    y\ =\ \frac{kx}{z}

    y\ =\ xz

    30s
    M9AL-IIa-1
  • Q7
    30s
    M9AL-IIa-b-1
  • 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.

    Joint

    inverse

    Combined

    Direct

    30s
    M9AL-IIa-1
  • 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 300

    Php 200

    Php 350

    Php 250

    30s
    M9AL-IIb-c-1
  • Q10

    In the expression 3𝑥², 2 is called _____.

    Literal Coefficient

    Exponent

    Numerical Coefficient 

    Constant Term

    30s
    M9AL-IId-1
  • Q11

    Which of the following is TRUE? 

    ^{x^6\cdot x^3\ =\ x^9}

    \left(b^{-5}\right)^0\ =\ b^{-5}

    a^0b^2\ =\ ab^0

    \frac{x^{-2}}{x^5}\ =\ x^3

    30s
    M9AL-IId-1
  • Q12
    30s
    M9AL-IId-1
  • Q13
    30s
    M9AL-IId-1
  • Q14
    30s
    M9AL-IIe-1
  • Q15
    30s
    M9AL-IIf-1

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