Maths Flashcards- Matrices
1
Q
What’s the matrix for a rotation through 90 degrees clockwise about the origin?
A
(0 1 )
-1 0
2
Q
What’s the matrix for a reflection in the line y=x?
A
( 0 1 )
1 0
3
Q
What’s the matrix for a reflection in the y axis?
A
( -1 0 )
0 1
4
Q
What’s the matrix for a reflection in the x axis?
A
(1 0)
0 -1
5
Q
What’s the matrix for a reflection in the line y=-x
A
(0 -1)
-1 0
6
Q
What’s the matrix for an enlargement with scale factor 4 with centre of enlargement (0,0)?
A
(4 0)
0 4
