How would I answer these questions based on the GLM? Questions are attached.

3.1d) In a dataset where measured scores (y) are collected from individuals in four groups, generated through a 2x2 factorial design, the GLM that best fits the data is: yi = 6 - 4x1; + 7x2; + 8(21, x2;) + error; Provide the means of the four groups (1 mark) 3.1e) In a dataset composed of measurements from two continuous variables (x and y), the GLM that best fits the data is: yi = 6 + 2xi + error; c (1 mark ) X = -5, y= X = 0, y= X = +5, y = X = 20, y =