For the dependent system of Example 8 on page 150, write the form for the solution with arbitrary y. See Exercise 67.

Data from Exercises 67

For the dependent system of Example 8 on page 150, both equations can be written as y = 1/3x − 3. The solution for the system can then be shown in terms of a general point on the graph as (x, = 1/3x − 3). This is referred to as the solution with arbitrary x. Find the solutions in this form for this system for x = −3, and x = 9.