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Arnold has recorded the number of chirps per minute ( x) that crickets make at different temperatures (y). He has determined that the association is linear and that the line of best fit is y = 1 + 50. What is the interpretation of the slope and yintercept of this equation?

Arnold has recorded the number of chirps per minute x that crickets make at different temperatures y He has determined that the association is linear and that t class=

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Answer:

Choice D

Explanation:

The slope of the line is

[tex]\frac{\delta\text{temperature}}{\#ofchirps}=\frac{60-50}{40-0}=\frac{1}{4}\frac{temperature}{\text{chirp}}[/tex]

This says that for every 1 chirp there is a temperature increase of 1/4.

The y-intercept of the line is (0, 50) meaning when there are no chirps the temperature is 50 degrees.

Therefore, choice D is correct.

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