(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

give the matrix in the transformation T in each case:

T: is a reflection in the line y= -x

2. Relevant equations

none that i know of for this question

3. The attempt at a solution

i know y= -x goes from the top left to bottom right in a cartesian plane, so the reflection of the line with initial point (1,1) in the first quadrant would end up in the third quadrant. i get my answer as:

-1 0

0-1

but the answer in the back of the book is:

0 -1

-1 0

why is their matrix the exact opposite as mine?

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# Homework Help: Problem finding the transformation in this case

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