graph y=6.75 , no need to explain

We want to graph a horizontal line.
The graph of the line can be seen at the end of the answer.
Now let's explain briefly how to get that.
Generally, we know that the lines of the form y = a (where a is a real number) are horizontal lines.
To graph these lines, we just need to draw a horizontal line (parallel to the x-axis) that crosses the y-axis at y = a.
In this particular case, we have y = 6.75, and the graph of the line can be seen below.
If you want to learn more, you can read:
https://brainly.com/question/10863938