An agronomist used four test plots to determine the relationship between the wheat yield y (in bushels per acre) and the amount of fertilizer x (in pounds per acre). The results are shown in the table.

(a) Use the regression capabilities of a graphing utility to find the least squares regression line for the data.
(b) Use the model to approximate the wheat yield for a fertilizer application of 175 pounds per acre.

Transcribed Image Text:

Fertilizer, x Yield, y 100 150 200 35 44 50 250 56