Question 1

Which axis on the complex plane represents the imaginary part of a complex number $$z = a + bi$$?

Accepted Answer

The vertical axis

Question 2

Given the complex number $$z = -2 + 4i$$, what are its coordinates when plotted on the complex plane?

Accepted Answer

$$(-2, 4)$$

Question 3

If a complex number $$z is $$plotted at $$(0, -5) on $$the complex plane, what is $$z$$?

Accepted Answer

$$-5i$$

Question 4

Which of the following complex numbers is located on the real axis?

Accepted Answer

$$3 + 0i$$

Question 5

A complex number $$z = a + bi is $$plotted at $$(a, b) on $$the complex plane. If $$z is at$$ $$(0, 7)$$, what is the real part of $$z$$?

Accepted Answer

$$0$$

Question 6

Which of the following is the correct way to plot $$z = 3 - 2i on $$the complex plane?

Accepted Answer

Move 3 units right and 2 units down

Question 7

If $$z = a + bi is $$plotted at $$(a, b)$$, which of the following complex numbers would be plotted at $$(0, 0)$$?

Accepted Answer

$$0$$

Question 8

What is the imaginary part of the complex number $$z = -6 + 9i$$?

Accepted Answer

$$9$$

Question 9

A student plots the point $$(5, 0) on $$the complex plane. Which complex number does this represent?

Accepted Answer

$$5$$

Question 10

Which of the following statements is TRUE about plotting complex numbers?

Accepted Answer

The real part is plotted on the horizontal axis

Question 11

If $$z = 2 + 3i$$ and $$w = -1 + 4i$$, which point represents $$z + w on $$the complex plane?

Accepted Answer

$$(1, 7)$$

Question 12

A complex number $$z is $$plotted at $$(-3, -2) on $$the complex plane. What is $$z$$?

Accepted Answer

$$-3 - 2i$$

Question 13

Which of the following complex numbers is plotted at $$(0, -1)$$?

Accepted Answer

$$-i$$

Question 14

If $$z = 4 + 0i$$, where is $$z$$ located on the complex plane?

Accepted Answer

On the real axis

Question 15

A complex number $$z is $$plotted at $$(0, 5). $$Which of the following is TRUE?

Accepted Answer

$$z is a $$purely imaginary number

Plotting Complex Numbers on the Complex Plane

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