Question on Linear Transformations with Lines and finding Natural Matrices.

AI Thread Summary
The discussion revolves around linear transformations T and S defined on R2, with specific equations provided for each transformation. The user seeks assistance in finding the image of the line 2x + 3y = 5 under transformation T, as well as the natural matrices for the composition T o S and the inverse T^-1. The user expresses difficulty in visualizing the transformation of a line compared to points, indicating a gap in understanding after a break from the topic. Ultimately, the user received help from a friend, resolving their confusion. The conversation highlights the challenges of applying linear transformations to geometric figures like lines.
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Let T : R2 -> R2 and S : R2 -> R2 be linear transformations de fined by:
T(x; y) = (5x + y ; 2x + 2y) and S(x; y) = (3x + 2y ; x):

(i). Find the image of the line 2x + 3y = 5 under T.
(ii). Find the natural matrices of the linear transformations T o S
and T^-1

Sorry, I haven't done this topic in 3 months now, and this question came up and I'm really struggling to come up with a solution. I drew out a graph to try to visualise what the answer could be, but again nothing seemed to work out :/ I mean, I can generally do transformation of a point questions fine, but have never come across transforming a line, so any help would be much appreciated, thanks.
 
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Nevermind, I got a solution off a friend.
 
I picked up this problem from the Schaum's series book titled "College Mathematics" by Ayres/Schmidt. It is a solved problem in the book. But what surprised me was that the solution to this problem was given in one line without any explanation. I could, therefore, not understand how the given one-line solution was reached. The one-line solution in the book says: The equation is ##x \cos{\omega} +y \sin{\omega} - 5 = 0##, ##\omega## being the parameter. From my side, the only thing I could...

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