Copy of What is a complex number?

An alternate way to refer to complex numbers.

How can we transform a "normal" coordinate plane (the Cartesian plane) into the complex plane?

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How do the values of a and b affect the position of a complex number (written as a+bi) on the plane?

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When will a complex number (of the form a+bi) be a point on the real axis?

When will a complex number (of the form a+bi) be a point on the imaginary axis?

Change the coordinates of A to the same point in each grid. In the second grid, what does the number in black represent? How could you calculate that value from your point on the first grid?