The given T is a linear transformation from R- into R-. Show that T is invertible and find a formula for T T(X1,X2) = (6X1 - 8X2, - 6*1 + 5x2) To show that T is invertible, calculate the determinant of the standard matrix for T. The determinant of the standard matrix is - 18 (Simplify your answer.) T- (* 1 , *2 ) =0 (Type an ordered pair. Type an expression using x, and x, as the variables.)