Here's the question you clicked on:
oswaldo669
For what value of k does the system below not have a unique solution? -1x + 7y +2z=6 2x + 1y +kz = -11 3x - 6y - 2z =-25
Set tee determinant of the coefficient matrix equal to zero, and wlove the resulting equation for k.
do the one and the {and u find ur answer
-27 + 30 + 15k = 0 k = -1/5