Answer:
see attached
Explanation:
You want a graph of the arithmetic sequence 0, 4.5, 9, 13.5, ....
Points
The x-coordinates of the points of an arithmetic sequence are generally assumed to be the counting numbers. This means the points you want to graph are ...
(1, 0), (2, 4.5), (3, 9), (4, 13.5)
These points are plotted and a line drawn through them in the attached graph.
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Additional comment
The slope of the line on the graph is the common difference: 4.5.