Final answer:
To find the value of k that makes a matrix singular when p = 9, you must substitute p into the determinant of the matrix and solve for k, assuming the determinant equals zero.
Step-by-step explanation:
If p = 9, then we are looking for the value of k that makes a matrix singular. A singular matrix is one that is not invertible, which corresponds to a determinant of zero. Without the specific matrix provided in the question, we can discuss the topic in general terms. For a square matrix to be singular, at least one of its eigenvalues must be zero. If a matrix has a parameter 'p' and we are instructed that p = 9, we substitute this value into the determinant equation of the matrix and solve the equation set to zero for 'k'. The precise solution will depend on the structure and entries of the matrix. The general procedure will involve calculating the determinant of this specific matrix and finding the value of 'k' that satisfies the equation.