Use Cramer's Rule to solve the system. x1 + x2 = 8 -3x1 + 4x2 = 9 (x1, x2) =
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First, we need to find the determinant of the coefficient matrix: $$ D = \begin{vmatrix} 1 & 1 \\ -3 & 4 \end{vmatrix} $$ $$ D = (1)(4) - (1)(-3) = 4 + 3 = 7 $$ Now, we need to find the determinants of the matrices obtained by replacing the columns of the Show more…
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