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DIRECT VARIATION

Quiz by okeke abraham

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10 questions
Show answers
  • Q1
    Which graph shows a proportional relationship between x and y?
    Question Image
    C
    B
    D
    A
    30s
  • Q2
    Write an equation for this relationship
    Question Image
    y = 4xy
    y = 1/8xy
    y = 1/3X
    y = 1/4x
    30s
  • Q3
    In a direct variation, y = 39 when x = 3. Find the value of y when x = 2.
    13
    5
    26
    21
    30s
  • Q4
    Is the given table a direct variation? If so, what is the constant?
    Question Image
    Yes; 4
    Yes; 2
    NO
    Yes; 1/4
    30s
  • Q5
    y varies directly with x. When y = 39, x = 3. Find the value of y when x = 2.
    8
    4
    12
    26
    30s
  • Q6
    Is this a direct variation? y = 2x
    YES
    NO
    30s
  • Q7
    Write the equation for the table given.
    Question Image
    y = 5x
    y = 3x
    y = 6x
    y = 4x
    30s
  • Q8
    What ordered pair does a direct variation always go through when graphed? What ordered pair does a direct variation always go through when graphed?
    (0,1)
    (0,0)
    (1,0)
    (1,1)
    30s
  • Q9
    The number of hours to paint a house varies inversely with the number of painters working. A 2400-square foot house can be painted in 27 hours by 6 painters. How many painters would need to work in order to paint the house in 18 hours?
    6 painters
    9 painters
    7 painters
    12 painters
    30s
  • Q10
    The gas pressure in a chamber varies directly with the temperature in the chamber. If the pressure in the chamber is 150 atmospheres (atm) when the chamber is at 50 degrees, what is the pressure in the chamber when the temperature of the chamber is 75 degrees?
    265 atm
    500 atm
    225 atm
    222 atm
    30s

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