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Precalculus

Course: Precalculus > Unit 7

Lesson 7: Matrices as transformations of the plane

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Understand matrices as transformations of the plane

CCSS.Math: HSN.VM.C.12

Google Classroom

Consider this matrix transformation:

\left[\begin{array}{c} 3 & 0 \\\\ 0 & 3 \end{array}\right]

What is the geometric effect of this transformation?

(Choice A)
A dilation about the origin by 3
(Choice B)
A dilation about the origin by start fraction, 1, divided by, 3, end fraction
(Choice C)
A horizontal stretch about the y-axis by 3
(Choice D)
A vertical stretch about the x-axis by start fraction, 1, divided by, 3, end fraction

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