Let 30 and 31, and ;- = yi Bo a:,;1 represent possible values for Bo, Bl, and 6,; respectively, and 7;: 1. Take partial derivatives of S with respect to 30 and 31. Hint: it may be easier if you use the chain rule with respect to E? 2. Set each of the partial derivatives to 0 and substitute Bo and B1 for 30 and 31 3. Show that 211:1 ei = 0 4. Show that 25:1 Quiet- = U 5. Solve for BO and 31