Caculate the meadin of the following data, 18,22,20,21,23. Pls help Im dum and the paper is due in a couple of hour

First, Arrange the data in ascending order

=> 18, 20, [21], 22, 23.

Now, Find the middle term i.e, 21.

Hence, Median of the given data is 21.

the final function for the graph becomes x-2=-1. before graphing you solve the equation, where x=1. then graph accordingly.   ( on the x-axis, 1 on the line will possess a vertical line.)