SAT Question 90ba8f98: Two-variable Data Models And Scatterplots answer and explanation with Desmos solution

Choice D is correct. A line in the xy-plane that passes through the 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 $\left(1,3.3\right)$ and $\left(7,14.5\right)$. It follows that the slope of this best fit line is approximately $\frac{14.5-3.3}{7-1}$, which is equivalent to $\frac{11.2}{6}$, or approximately $1.87$. Therefore, of the given choices, $2$ is closest to the slope of the line of best fit shown.