00:01
In this question, we have a triangle's data matrix, d, is minus 3 ,0, minus 2, 4, minus 5, 5.
00:10
And we have a transformation t that reflects points in the y -axis.
00:19
So what that means is that the x unit vector 1 -0 will go to minus 1 -0, and the y unit vector 0 -1 will just go to itself.
00:32
Means that the matrix which implements transformation t is minus one zero zero one so the matrix after the transformation d prime is going to be a b so minus one zero zero times minus three zero minus two four minus five five and that gives us so minus three times minus one zero times zero gives us three, two there, five over here, and then 0, 4, 5.
01:09
So this is our new data matrix, and then we need to think about what this is going to look like...