Mathematics 4024 · O Level · Transformations

Transformations — practice question

Matrix $A$ obeys an equation. Shapes $A$ and $B$ are displayed.
(a)[2]

For the matrix equation $\begin{pmatrix}2&3\\5&2\end{pmatrix} - 3A = \begin{pmatrix}5&3\\-4&-1\end{pmatrix}$, find $A$.

(b)[3]

Given $B = \begin{pmatrix}2&-2\\4&p\end{pmatrix}$ and $\det B = 2$, find the value of $p$ and hence write down $B^{-1}$.

(c(i))[2]

Describe in full the single transformation that takes shape $A$ to shape $B$.

(c(ii))[2]

The matrix $\begin{pmatrix}-2&0\\0&-2\end{pmatrix}$ gives the transformation from shape $A$ to shape $C$. Draw and label shape $C$.

Worked solution & mark scheme

This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: Therefore, $A=\begin{pmatrix}-1&0\\3&1\end{pmatrix}$

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI