A complex number 21 is plotted below. Plot its complex conjugate, 21.Im86-4-2A++-8 -61-424+++ Re6 2 8-4-6-8

Step 1
Given;
[tex]\begin{gathered} A\text{ plotted complex number;} \\ z_1 \\ \end{gathered}[/tex]Required; To find the complex conjugate
[tex]\bar{z}_1[/tex]Step 2
Find the complex conjugate
The complex conjugate of a + bi is a - bi. For example, the conjugate of 3 + 15i is 3 - 15i, and the conjugate of 5 - 6i is 5 + 6i.
Hence, from the plot the complex number is;
[tex]\begin{gathered} 7+0i=7 \\ \text{This is because the plot lies on the x-axis and the corresponding y-axis is }0 \end{gathered}[/tex]The complex conjugate hence will be;
[tex]\begin{gathered} 7-0i=7 \\ \text{Therefore the required complex conjugate = 7} \end{gathered}[/tex]Hence
[tex]\bar{z}_1=_{}7[/tex]