OG详解-OG7 数学1 Q21

Choice B is correct. In the given scatterplot, the x-values represent the distance above sea level,in feet, and the y-values represent the temperature, in ºF. The point on the line of best fit with an x-value of 4,000 has a corresponding y-value of 35. Therefore, at a distance of 4,000 feet above sea level, the temperature predicted by the line of best fit is 35°F.
Choice A is incorrect. This is the temperature, in ºF, predicted by the line of best fit at a distance of 0 feet above sea level. Choice C is incorrect. This is the measured temperature, in ºF, at a distance of 6,000 feet above sea level. Choice D is incorrect and may result from conceptual or calculation errors.