I need to understand how to solve the following please ?

Exercise 3: The following information regarding a dependent variable Y and an independent variable X is provided EX = 90 EY = 340 E ( Y - Y)(X - X) =-156 n=4 E (X - X) =234 SSR = 104 E (Y - Y) = 1974 1. The total sum of squares (SST) is -156 234 1870 1974 2. The sum of squares due to error (SSE) is a. -156 234 1870 1974 3. The mean square error (MSE) is 1870 1974 935 4. The slope of the regression equation is a. -0.667 0.667 100 -100 5. The Y intercept is a. -0.667 0.667 100 d. -100 The coefficient of correlation is -0.2295 0.2295 0.0527 -0.0572