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DIRECT VARIATION

Quiz by Roselyn Arbitrario

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10 questions
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  • Q1

    In a direct variation, y=39 when x=3.  Find the value of y when x=2.

    3

    2

    58.5

    26

    60s
  • Q2

    Write an equation for this relationship.

    Question Image

    y=32x

    y=16x

    y = 1/4 x

    y=2x

    30s
  • Q3

    Y varies directly with x, and y is 80 when x is 16. Which equation represents this situation?

    y=5x

    y=1344x

    y=4/21x

    y=100x

    30s
  • Q4

    If y = 15 when x = 12, find y when x = 32.

    y=5

    y = 40

    y=-40

    y=-5

    30s
  • Q5

    If y =4 when x = -4, find y when x =7.

    y=7

    y=3

    y=-7

    y=-3

    30s
  • Q6

    What does the Direct Variation Equation look like?

    y = b

    y = x

    y = kx

    y = mx+b

    30s
  • Q7

    A dishwasher uses 65 gallons of water to wash 5 loads of dishes. What is the constant of variation?

    k = 5

    k = 1/13

    k = 65

    k = 13

    30s
  • Q8

    If y varies directly with x and y= 12 when x= 15. What is the value of x when y= 16?

    11.25

    20

    19

    12.8

    30s
  • Q9

    if y is directly proportional to x, y is 10 when x is 5. What is the value of y when x is 9?

    18

    1.5

    12

    6

    30s
  • Q10

    Is this proportional?           

                 y=2x

    no

    yes

    30s

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