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Math·Problem-Solving and Data Analysis·Two-variable data: Models and scatterplots

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The scatterplot shows the relationship between two variables, $x$ and $y$. A line of best fit is also shown. Which of the following is closest to the slope of the line of best fit shown?

A

$12.05$

B

$0.72$

C

$-0.72$

D

$-1.39$