Higher June 2017 Paper 2 Q9
9 The diagram shows triangle A drawn on a grid.

Kyle reflects triangle A in the \(x\)-axis to get triangle B.
He then reflects triangle B in the line \(y = x\) to get triangle C.
Amy reflects triangle A in the line \(y = x\) to get triangle D.
She is then going to reflect triangle D in the \(x\)-axis to get triangle E.
Amy says that triangle E should be in the same position as triangle C.
Is Amy correct?
You must show how you get your answer. (3)
| Answer | Mark | Notes |
|---|---|---|
| No (supported) | M2 | for the correct position of C or E |
| [M1 | for a correct position of B or D] | |
| C1 | for No with correct supporting evidence, eg. showing C and E in the correct positions | |
| OR | ||
| M2 | for C is a rotation of \(90^\circ\) anticlockwise about \(O\) or E is a rotation of \(90^\circ\) clockwise about \(O\) | |
| C1 | for No with supporting evidence, eg. C is a rotation of \(90^\circ\) anticlockwise about \(O\) and E is a rotation of \(90^\circ\) clockwise about \(O\). |