Which of the following equations is the equation of a suitable line of best fit for the data given below? . {(45, 18), (62, 13), (72, 11), (55, 15), (38, 21), (26, 31), (93, 9), (64, 13), (29, 28), (33, 25), (49, 17)}.. a. y = 3x + 35. b. y = –10x + 35. c. 3/10x -35. d. -3/10x + 35

By using the function in excel, we can plot the data given in the problem statement or we can also graph it manually. From these graphs, we can obtain an equation that would best fit the data. From the given choices, the best answer is option D, -3/10x + 35. 

Louise’s answer is not correct. She is missing the term 30x3. When squaring a binomial, it is best to write the product of the binomial times itself. Then you can use the distributive property to multiply each term in the first binomial by each term in the second binomial. Louise also could have used the formula for a perfect square trinomial, which is found by squaring a binomial.