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1 October, 04:33

The scatter plot below shows the relationship between the length (x) in meters and mass f (x) in kg of a marine animal

(1,0) (2,10) (3,20) (4,30) (5,40) (6,50) (7,65) (8,70) (9,80) (10,90)

Which of the following fuction is best represented by the scatter plot?

F (x) = 9-10.3x

F (x) = - 10.3+9x

F (x) = - 9+10.3x

F (x) = 10.3-9x

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  1. 1 October, 08:11
    0
    F (x) = - 9 + 10.3x probably.

    It's definitely not the first or last option as they have negative gradients (i. e. negative x-coefficient) and so represent a negative correlation. The data given tells us there is a positive gradient and so a positive correlation.

    It could be the second option as the second and third are not so vastly different but I would go for the third because it appears to most closely fit the data pattern.
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