Which composition transformation occurs in the following?

(X,y) (Y+5,-x)

1 answer

The transformation you provided seems to describe a composition of two transformations applied to a point \((x, y)\). Let's analyze the transformation step by step.

  1. Input Point: Start with the point \((x, y)\).

  2. First Transformation: The transformation \((X, y) \to (Y + 5, -x)\) suggests that:

    • The new \(x\)-coordinate is \(Y + 5\).
    • The new \(y\)-coordinate is \(-x\).

In terms of the original coordinates \((x, y)\):

  • Replacing \(Y\) with \(y\), we get: \[ (x, y) \to (y + 5, -x) \]

Now we can summarize the transformation as follows:

  • The new \(x\)-coordinate is \(y + 5\).
  • The new \(y\)-coordinate is \(-x\).

Therefore, the overall transformation can be expressed as: \[ (x, y) \to (y + 5, -x) \]

To summarize, the composition transformation involves:

  1. Swapping \(x\) and \(y\) (but specifically \(y\) becomes the new \(x\)).
  2. Adding 5 to the new \(x\) coordinate (which is originally \(y\)).
  3. Negating the original \(x\) coordinate to find the new \(y\) coordinate.

Thus, the transformation involves both a reflection and a translation:

  • Reflection across the line \(y = -x\) (which changes the sign and swaps coordinates).
  • Translation by 5 units in the \(x\) direction.

If you'd like further clarification or a deeper exploration into the transformation, just let me know!