Date | May 2021 | Marks available | 3 | Reference code | 21M.1.AHL.TZ2.14 |
Level | Additional Higher Level | Paper | Paper 1 | Time zone | Time zone 2 |
Command term | Find | Question number | 14 | Adapted from | N/A |
Question
A geometric transformation is defined by
.
Find the coordinates of the image of the point .
Given that , find the value of and the value of .
A triangle with vertices lying on the plane is transformed by .
Explain why both and its image will have exactly the same area.
Markscheme
(M1)
OR A1
[2 marks]
(M1)
(A1)
solve simultaneously:
A1
Note: Award A0 if and are not labelled or are labelled the other way around.
[3 marks]
A1
scale factor of image area is therefore (and the translation does not affect the area) A1
[2 marks]