what is the complex number shown in this graph? ? + i

Explanation:

Step1: Identify real part

The red dot is on the real ($\Re$) axis at 8, so the real component is 8.

Step2: Identify imaginary part

The dot lies on the real axis, so the imaginary component is 0.

Step3: Form complex number

A complex number is written as $\text{real part} + (\text{imaginary part})i$.

Answer:

$8 + 0i$ (or simply $8$)