SAT Question 24a1e6a7: Two-variable Data Models And Scatterplots answer and explanation with Desmos solution

Choice B is correct. A line in the xy-plane that passes through points $\left(x_1,y_1\right)$ and $\left(x_2,y_2\right)$ has a slope of $\frac{y_2-y_1}{x_2-x_1}$. The line of best fit shown passes approximately through the points $\left(0,14\right)$ and $\left(13,0\right)$. It follows that the slope of this line of best fit is approximately $\frac{0-14}{13-0}$, or $-\frac{14}{13}$. Of the given choices, $-1.1$ is closest to $-\frac{14}{13}$.