To show an arithmetic sequence on a graph, you need to plot its terms.

First, use the x-axis to show the term number, like 1, 2, 3, and so on. The y-axis will show the value of each term.

Let’s use a simple formula:

$a_n = a + (n-1)d$

Here, $a$ is the first number in the sequence, and $d$ is how much each term increases. You can plot each term as a dot on the graph at the point $(n, a_n)$.

If you want to show the total of the terms, you can add another line to the graph. This line will show the cumulative sum of the sequence.

To find the sum of the first $n$ terms, use this formula:

$S_n = \frac{n}{2}(2a + (n-1)d)$

When you connect the dots for both the sequence and the sum, it creates a clear picture of how the terms and their total change.