Question

The following table shows ice cream sales (y) with respect to the temperature for the day (x). Which of the following is most likely to be the equation of the trend line?

TEMPERATURE      Ice Cream Cones 
(FAHRENHEIT)              Sold                                      
70                                     5
81                                     30
84                                     40
95                                     54
 the answer is y=2x-130

Answer 1

We are given a set of data for temperature vs Ice Cream cones. Plotting the two sets of values and generating a trendline would produce the image I've attached.
The trendline is given by the equation y = 2x + 131