Modulus of Complex Numbers

What is the rectangular form of a complex number?

• x + i y

• x y i

• x² y i

• x + y

Modulus of a complex number measures the ____ of that line from the ____ in the complex plane.

• Value, Origin

• Distance, Any point

• Value, Any point

• Distance, Origin

How do you denote modulus of a complex number z = x + i y ?

• ΙzΙ = √x² - y²

• ΙzΙ = √x² + y²

• ΙzΙ = ∜x² - y³

• ΙzΙ = x² + y²

What is the modulus of the complex number z = - 5i ?

• 25

• - 5

• 5

• - 25

Ι 3 + 4i Ι = _____

• 49

• 25

• 7

• 5