3
QuizMultiple Choice
Multiply and Divide Complex Numbers
Question 3 • NC-Math 4 CR
For z = –2 + 2i, which graph represents z and –2z?
Answer
A
On a coordinate plane, the y-axis is labeled imaginary and the x-axis is labeled real. Point z is (negative 2, 2) and point negative 2 z is (1, negative 1).
B
On a coordinate plane, the y-axis is labeled imaginary and the x-axis is labeled real. Point z is (negative 2, 2) and point negative 2 z is (4, negative 4).
C
On a coordinate plane, the y-axis is labeled imaginary and the x-axis is labeled real. Point z is (negative 2, 2) and point negative 2 z is (negative 1, negative 4).
D
On a coordinate plane, the y-axis is labeled imaginary and the x-axis is labeled real. Point z is (negative 2, 2) and point negative 2 z is (negative 4, negative 4).