PSAT Math Multiple-Choice Question 816: Answer and Explanation
Question: 816
What is the approximate slope of the best-fit line of the data in the graph, expressed as
- A. 3.3
- B. 4.8
- C. 5.7
- D. 7.6
Correct Answer: A
Explanation:
(A) Some approximate points that would be on the best-fit line are (1990, 0) and (1996, 18). Calculate the approximate slope: , which comes closest to choice (A).
You can also visualize this by drawing the approximate best-fit line on the graph:
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