Warm-up 7-8.

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Presentation transcript:

Warm-up 7-8

Lesson 7-8 Complex Numbers & Graphing Objectives Students will: Graph complex numbers in a plane Find absolute values of complex numbers

Graphing Complex Numbers Graph on a coordinate plane x-axis → real axis y-axis → imaginary axis Example 1 Graph 2 + 0i 2 + 5i 3i -4 – 2i

Absolute Value Abs. value of real #’s is the distance from zero Absolute value of complex #’s is distance to coordinates on graph Use pythagorean theorem:

Example 2 Example 3 HW 86 Quiz tomorrow: Lessons 7-5 through 7-8 HW’s 80, 81, 84, 86