PSAT Math Multiple-Choice Question 649: Answer and Explanation
Question: 649
What choice most closely approximates the slope of the best-fit line of the graph above?
- A.
- B.
- C.
- D.
Correct Answer: B
Explanation:
(B) We can rule out choice (A) because the slope is clearly positive. Use the slope formula:
Plug in the values for the approximate endpoints of the line of best fit to get:
The answer is choice (B).
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