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Question 1 · 1 mark
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Which single transformation does
(
0
1
−
1
0
)
\begin{pmatrix} 0 & 1 \\ -1 & 0 \end{pmatrix}
(
0
−
1
1
0
)
represent?
A rotation of
90
∘
90^\circ
9
0
∘
anticlockwise about
O
O
O
A rotation of
90
∘
90^\circ
9
0
∘
clockwise about
O
O
O
A reflection in the line
y
=
x
y = x
y
=
x
A reflection in the line
y
=
−
x
y = -x
y
=
−
x