An arithmetic sequence is a sequence of numbers in which the difference between any two consecutive numbers is the same. For example, the sequence 1, 3, 5, 7, 9 is an arithmetic sequence with a common difference of 2.
One way to solve an arithmetic sequence is to use a graph. To do this, plot the terms of the sequence on a graph, with the x-axis representing the position of the term in the sequence and the y-axis representing the value of the term. The graph of an arithmetic sequence will be a straight line.