3) Suppose you try this least squares method with only two data points. You should get the equation of the line connecting the two points, right? a) Use the least squares method for the two points (4, 9) and (7, 11). What is the equation? b) Extra credit: Use the least squares method for the two points (u, w) and (v, z). What is the equation? Note: the answers for m and b will both be expressions involving u, v, w, and z