Mathematics (2019) Grade(s): 09-12 - Precalculus

MA19.PRE.14

Multiply a vector (regarded as a matrix with one column) by a matrix of suitable dimensions to produce another vector. Work with matrices as transformations of vectors.

Unpacked Content

Knowledge

Students know:
  • Conditions under which matrix multiplication is defined.
  • Techniques for adding and multiplying matrices.
  • Techniques for scalar multiplication.
  • Techniques for performing translations, rotations, reflections, and dilations.

Skills

Students are able to:
  • Write a vector in matrix notation.
  • Determine if matrix multiplication is defined for a given product of a matrix by a vector.
  • Multiply a vector by a matrix.
  • Add, multiply, and perform scalar multiplication on matrices.

Understanding

Students understand that:
  • Mathematical representations such as vectors and matrices may be used in a wide variety of settings to model and solve real world problems and this modeling is facilitated by fluent use of techniques for working with these representations.
  • Transformations of multiple vectors may be accomplished by the use of matrix multiplication as a means of transforming all vectors at the same time in a similar manner.

Vocabulary

  • Transformation of Vectors
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