The function f(x, y) = 9x2 x3 + 36y2 – 8y3 + 40 has 4 critical points and the following second partial derivatives matrix. 18-6x 2nd Partials Matrix = 72-48y For each critical point listed below, find the determinant value and, if possible, classify the point. Critical Point A: x=0, y=0 D(0,0)= Select Classification Critical Point B: x=6, y=0 D(6,0)= Select Classification

Find & interpret the y-intercept (a) if an interpretation is possible. If it’s not possible, just report the y-intercept and explain why it can not be interpreted practically   Use your model to estimate the price of a car that has 100,000 miles. Is this prediction reasonable? Why or why not?   Provide a brief conclusion or discussion of the results that includes one of the following:   potential problems or sources of bias are the results what you expected? are there other variables that may also be useful to predict the price of a car

Exhibit 14-25 You are given the following information about x and y. Independent Variable Dependent Variable 3 7 3 6 7 O 5.45 08.07 0¹ O-1.32 8 6 7 3 8 نها Refer to Exhibit 14-25. The least squares estimate of bo (intercept)equals_

True or False Question   A procedure used for finding the equation of a straight line that provides the best fit for the relationship between the independent and dependent variables is called the minimum deviations method.   Answer choices: True False