In Exercises 1–3, perform the indicated operations and write the result in standard form. (6 − 7i)(2 + 5i)
Table of contents
- 0. Review of College Algebra4h 45m
- 1. Measuring Angles40m
- 2. Trigonometric Functions on Right Triangles2h 5m
- 3. Unit Circle1h 19m
- 4. Graphing Trigonometric Functions1h 19m
- 5. Inverse Trigonometric Functions and Basic Trigonometric Equations1h 41m
- 6. Trigonometric Identities and More Equations2h 34m
- 7. Non-Right Triangles1h 38m
- 8. Vectors2h 25m
- 9. Polar Equations2h 5m
- 10. Parametric Equations1h 6m
- 11. Graphing Complex Numbers1h 7m
11. Graphing Complex Numbers
Graphing Complex Numbers
Multiple Choice
Plot the complex number z=−i on the graph below.

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Verified step by step guidance1
Understand that a complex number is represented as z = a + bi, where a is the real part and b is the imaginary part.
For the complex number z = -i, identify the real part a = 0 and the imaginary part b = -1.
Locate the point on the complex plane where the real axis (Re) is 0 and the imaginary axis (Im) is -1.
On the graph, the horizontal axis represents the real part, and the vertical axis represents the imaginary part.
Plot the point at the intersection of Re = 0 and Im = -1, which is directly on the negative side of the imaginary axis.
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