Curve fitting the following application of linear algebra to curve fitting is explained in greater detail in section $3.7 of your text (page 218). (a) determine the equation of a line passing through the points (-1,-2) and (3,2) in the following way. assume the line has equational form and put both data points into equation (1) to get two equations in the two unknowns co and cy. write this system of equations as a matrix equation of the form: ax - b now use any linear algebra technique you like (row reduction on the augmented matrix, cramer's rule, or compute a-b) to solve for the unknowns x (co, c).