Edexcel IGCSE Math B 5.F matrices and transformations

Practise matrix-transformation questions by multiplying vertex coordinates by the matrix, then plotting and labelling the image.

Exam points

Apply a transformation matrix to each vertex coordinate of a triangle or shape.
Draw and label the transformed image on the grid after calculating coordinates.
Interpret matrices for reflections, rotations, stretches or other transformations.

[Maximum number: 3]

Figure for Question 5.F Matrices and transformations question 1 — Edexcel IGCSE Math B

The vertices of triangle A are the points with coordinates (2,2),(3,2) and (2,4).

Triangle A is transformed to triangle B under the transformation with matrix
$P=\begin{pmatrix}-2&0\\0&-2\end{pmatrix}.$

On the grid, draw and label triangle B.

Correct multiplication:
$\begin{pmatrix} -2&0\\ 0&-2 \end{pmatrix} \begin{pmatrix} 2&3&2\\ 2&2&4 \end{pmatrix} = \begin{pmatrix} -4&-6&-4\\ -4&-4&-8 \end{pmatrix}$
Triangle B drawn and labelled.

M1 for showing the correct multiplication in the correct order.

A2 for the correctly drawn triangle B, with -1 for each error or omission.

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5.F Matrices and transformations question 1