SAT Question 9296553d: Two-variable Data Models And Scatterplots answer and explanation with Desmos solution

Choice A is correct. A line of best fit for the data in a scatterplot is a line that follows the trend of the data with approximately half the data points above and half the data points below the line. Based on the given data, a line of best fit will have a positive $y$-intercept on or near the point $(0,6)$ and a negative slope. All of the choices are in slope-intercept form $y=mx+b$, where $m$ is the slope and $b$ is the $y$-coordinate of the $y$-intercept. Only choice A is an equation of a line with a positive $y$-intercept at $(0,6)$ and a negative slope, $-1$.