Matrices

Concept:Identify the characteristics of the given matrix.Explanation:The matrix $\begin{bmatrix} 3 & -4 \\ -3 & 4 \end{bmatrix}$ has 2 rows and 2 columns, so it is a square matrix.It is not an identity matrix because the diagonal entries are not 1 and off‑diagonals are not 0.It is not skew‑symmetric because its transpose $\begin{bmatrix} 3 & -3 \\ -4 & 4 \end{bmatrix}$ is not equal to its negative.It is not a diagonal matrix because the off‑diagonal entries are non‑zero.Answer:Square matrix