Matrix Transformations Flashcards
Memorisation
1
Q
(k 0)
(0 k)
A
Enlargement, scale factor k, about origin
2
Q
(0 1)
(-1 0)
A
Rotation, 90 degrees clockwise about the origin
3
Q
(0 -1)
(1 0)
A
Rotation, 90 degrees anti - clockwise about the origin
4
Q
(-1 0)
(0 -1)
A
Rotation, 180 degrees about the origin
5
Q
(1 0)
(0 -1)
A
Reflection in the x-axis (the line y = 0)
6
Q
(-1 0)
(0 1)
A
Reflection in the y-axis (the line x = 0)
7
Q
(0 1)
(1 0)
A
Reflection in the line y=x
8
Q
(0 -1)
(-1 0)
A
Reflection in the line y= -x
9
Q
What is the identity matrix
A
(1 0)
(0 1)
