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Short Quiz in Math 9 solves problems involving variation

Quiz by Quizalize Premium (Philippines)

Grade 9
Mathematics
Philippines Curriculum: Grades 1-10

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Measures 1 skill from
Grade 9
Mathematics
Philippines Curriculum: Grades 1-10

M9AL-IIb-c-1

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5 questions
Show answers
  • Q1
    If y is directly proportional to x and y=15 when x=12, what is the value of y when x=16?
    20.0
    12.8
    16.4
    13.0
    30s
    M9AL-IIb-c-1
  • Q2
    If n is inversely proportional to the square of p and n=10 when p=2, what is the value of n when p=4?
    10
    20
    2.5
    5
    30s
    M9AL-IIb-c-1
  • Q3
    The distance a car travels (d) varies directly with the speed of the car (r). If m is the constant of proportionality, which formula could represent this relationship?
    d = mr
    r = md
    d = m/r
    r = m2/d
    30s
    M9AL-IIb-c-1
  • Q4
    The time required to complete a job varies inversely with the number of people working. If it took 5 painters 3 days to paint a house, how long would it take 1 painter?
    15 days
    3/5 day
    8 days
    5/3 day
    30s
    M9AL-IIb-c-1
  • Q5
    Suppose c varies jointly with a and b. If c=25 when a=2 and b=2.5, what is the value of b when c=40 and a=6?
    20/3
    5
    6
    4/3
    30s
    M9AL-IIb-c-1

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