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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 $y$, with a line of best fit. The 6 data points fall in a linear pattern trending down from left to right. The line of best fit passes through approximately $(-10,13.9)$ and $(0,4.2)$. Which of the following equations best represents the line of best fit shown?

A

$y=-x+17.8$

B

$y=x-17.8$

C

$y=-x+4.2$

D

$y=x-4.2$