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# Matricies Question. Watch

1. Triangle R has vertices (0,0) (3,0) and (0,2). Find coordinates of the vertices of the image R under transformation(imagine another line after the one) ( 4 1 -2 3) . No clue what to do here. Any hints would be great.
2. (Original post by Nirm)
Triangle R has vertices (0,0) (3,0) and (0,2). Find coordinates of the vertices of the image R under transformation(brackets are meant to be one) ( 4 1) . No clue what to do here. Any hints would be great. (-2 3)
See page 8 in the attached.
Attached Images
3. Maths NotesMEIFP1-3.pdf (661.7 KB, 155 views)
4. (Original post by brianeverit)
See page 8 in the attached.
It does help but i am not sure how to really apply it to this question and also somehow the text messed up because 4 1 -2 3 is meant to be a 2x2 matrice i with 4 1 on top and -2 3 on the bottom.
5. (Original post by Nirm)
It does help but i am not sure how to really apply it to this question and also somehow the text messed up because 4 1 -2 3 is meant to be a 2x2 matrice i with 4 1 on top and -2 3 on the bottom.
Form a matrix from the coordinates as follows and pre-multiply by your trransformation matrix.
Example. If thr triangle was A(2,3),B(4,1),C(2,2) and the transformation matrix was then you would have

so the image triangle would be A'(7,7),B'(9,6),C'(6,6)
6. (Original post by brianeverit)
Form a matrix from the coordinates as follows and pre-multiply by your trransformation matrix.
Example. If thr triangle was A(2,3),B(4,1),C(2,2) and the transformation matrix was then you would have

so the image triangle would be A'(7,7),B'(9,6),C'(6,6)
Ahhhh okay that makes sense. Thank you for you help!

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