Write a rational expression with at least one in the denominator and then analyze it using the following questions: a. Set your expression equal to 0. Does this expression have any solutions? Why, or why not? b. Set your expression equal to y and graph the equation on a graphing utility or on your calculator. Are there any values that cannot be? Explain. c. How do the numbers and variables in your equation relate to the features of the graph? d. Identify the denominator of your expression; add 6 to the denominator only. How does the graph change?