(adsbygoogle = window.adsbygoogle || []).push({}); My question is:

If P' is the image of P under a matrix D = (1, -4, 0, -1) as follows (top left, top right, bottom left, bottom right). If P is not on the x-axis, why is PP' bisected by the x-axis and is at a constant angle to the x-axis, for any choice of P?

I can visually see what's happening but how can I show it? Please help

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# Homework Help: Matrices and transformations

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