T1 T2 T3 T4

Which of the following operations result in a shear matrix? By multiplying...

x-scaling with x-rotation
x-rotation with z-scaling
x-scaling with y-rotation
Any scaling with any rotation
Any rotation with any scaling
Any translation with any rotation
y-scaling with z-rotation

Which transformation undoes a scaling by $\begin{pmatrix}2.0\\0.5\\4.0\end{pmatrix}$?

translate $\begin{pmatrix}-2.0\\-0.5\\-4.0\end{pmatrix}$
scale $\begin{pmatrix}-2.0\\-0.5\\-4.0\end{pmatrix}$
rotate $\begin{pmatrix}180\,^{\circ}\\45\,^{\circ}\\360\,^{\circ}\end{pmatrix}$
scale $\begin{pmatrix}0.5\\2.0\\0.25\end{pmatrix}$

Which transformation undoes a translation by $\begin{pmatrix}3.0\\-2.0\\0.5\end{pmatrix}$?

scale $\begin{pmatrix}-3.0\\2.0\\-0.5\end{pmatrix}$
translate $\begin{pmatrix}1/3\\-0.5\\2\end{pmatrix}$
translate $\begin{pmatrix}-3.0\\2.0\\-0.5\end{pmatrix}$
translate $\begin{pmatrix}0.5\\-2.0\\3.0\end{pmatrix}$

Which rule does NOT apply in terms of matrix operations?

Associative law: $ A \cdot B \cdot C = A \cdot (B \cdot C) = (A \cdot B) \cdot C $
Commutative law $ A \cdot B = B \cdot A $
For the transpose matrix: $ (A \cdot B)^T = B^T \cdot A^T $
Distributive law: $ (A + B) \cdot C = A \cdot C + B \cdot C $

Which matrix translates an object by $\begin{pmatrix}1\\2\\3\end{pmatrix}$ ?

Which matrix scales an object by $\begin{pmatrix}0.5\\2\\8\end{pmatrix}$ ?