On an Argand diagram, the x-axis corresponds to which axis?

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Multiple Choice

On an Argand diagram, the x-axis corresponds to which axis?

In the Argand diagram, a complex number z = x + i y is plotted at the point (x, y). The horizontal coordinate x represents the real part, while the vertical coordinate y represents the imaginary part. The set of points with zero imaginary part (y = 0) forms the horizontal line that contains all real numbers—that is the real axis. So the x-axis corresponds to the real axis. The imaginary axis is the vertical line where x = 0, and the others aren’t standard axis names.

In the Argand diagram, a complex number z = x + i y is plotted at the point (x, y). The horizontal coordinate x represents the real part, while the vertical coordinate y represents the imaginary part. The set of points with zero imaginary part (y = 0) forms the horizontal line that contains all real numbers—that is the real axis. So the x-axis corresponds to the real axis. The imaginary axis is the vertical line where x = 0, and the others aren’t standard axis names.

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