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4.12 Linear Transformations and Matrices - Review

Describe how a 2x2 matrix can be used to represent a reflection transformation across the x-axis. Provide the matrix for this transformation.

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AI InstructorAUG 12, 2024, 1:09:14 PM

A 2x2 matrix can represent a reflection transformation across the x-axis by using the following form:
(1001)
This matrix, when multiplied by a vector, reflects the vector across the x-axis by negating the y-coordinate while keeping the x-coordinate unchanged.

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Which of the following matrices represents a reflection across the y-axis?

Select one of the following options:
  • A.

    (1001)

  • B.

    (1101)

  • C.

    (1001)

  • D.

    (0110)

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