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30 September, 07:09

Y and x have a proportional relationship, and y = 12 when x = 5. What is the value of y when x = 8?

y and x have a proportional relationship, and y = 7 when x = 2. What is the value of x

when y = 21?

Which equation represents a proportional relationship?

y=12x

y=2 (x+13)

y=-3x+2

y = 3x

+4
Answers (1)
  1. 30 September, 07:26
    0
    1st question: y=19.2. because x=8 when x multiply by 1.6, so y should multiply by 1.6 to get 19.2

    2nd question: x=6. Because y multiply by 3 is 21, so x need to multiply by 3 to get 6.

    Sorry I don’t know the third question ...
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