Find the least-squares line y= Bo + B,x that best fits the data (- 4,0), (- 1,0), (0,2), (1,5), and (4,5), assuming that the first and last data points are less reliable. Weight them half as much as...

Extracted text: Find the least-squares line y= Bo + B,x that best fits the data (- 4,0), (- 1,0), (0,2), (1,5), and (4,5), assuming that the first and last data points are less reliable. Weight them half as much as the three interior points. The least-squares line is y=+ x. (Simplify your answers.)