SAT Math Multiple Choice Question 709: Answer and Explanation
4. Which of the following scatterplots provides the strongest evidence in support of the hypothesis that y varies inversely as the square of x?
Correct Answer: A
Data Analysis (graphing data) MEDIUM-HARD
If y varies inversely as the square of x, then the variables are related by the equation , where k is a positive constant. The graph of such an equation in the xy-plane looks like this:
This most closely resembles the scatterplot in choice (A).