Need help with this multivariable concept using linear algebra

Consider the data points (1, 2), (2, 2), (3,4) (:3) (3 points) Find the equation y = (:11 + 323: of a. least squares line that ts the data points (1) best with respect to the sum of squares error measurement. Explain why the least squares line you found is unique. (b) (1 point) Calculate the minimum sum of squares error My X 3||2 (c) (1 point) Sketch by hand the data points and the unique least squares line on the same graph