Question

A researcher studied the relationship between the number of times a certain species of cricket will chirp in one minute and the temperature outside. Her data is expressed in the scatter plot and line of best fit below. Based on the line of best fit, what temperature would it most likely be outside if this same species of cricket were measured to chirp 96 times in one minute?

Answer 1

56°F

Explanation:

For straight line, gradient is the same at any point of the line,

therefore:

`(y_2-y_1)/(x_2-x_1) = (y_3-y_1)/(x_3-x_1)`

`(50-47)/(72-60) =(y-47)/(96-60)`

`(3)/(12) =(y-47)/(36)`

`3=(y-47)/(3)`

`y-47=3*3`

`y=9+47`

`y=56^oF`