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Type: Multiple-Choice
Category: Complex Numbers
Level: Grade 11
Standards: HSN-CN.B.5
Author: nsharp1
Created: 5 years ago

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Complex Numbers Question

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Grade 11 Complex Numbers CCSS: HSN-CN.B.5

If z=-2+7i is plotted in the complex plane, how can multiplying by -1 be described geometrically? Choose all correct answers.
  1. It rotates z 90° clockwise about the origin.
  2. It rotates z clockwise 180° about the origin.
  3. It reflects z across the imaginary and real axis.
  4. It reflects z across the real axis.