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23 November, 14:43

Is this chart proportional. Yes or No. Why?

(1,40), (2,50), (4,70), (7,80)

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Answers (2)
  1. 23 November, 14:49
    0
    (1,40) equation: y=40x

    (2,50) equation: y=25x

    (4,70) equation: y=17.5x

    (7,80) equation: y=11.43x

    does not represent a proportional relationship because they all have different equations.
  2. 23 November, 14:53
    0
    Yes because the input & out put number are not the same
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