Transformations
Transformations
Writing Equations
Writing a rational function can be accomplished by adding the asymptote lines to the parent function 
. It can also be done by using the rules of transformations.
Example 1 The graph below has a vertical asymptote at x = 2 and a horizontal asymptote at y = -4. What is the equation of the function that models this graph?
. It can also be done by using the rules of transformations. Example 1 The graph below has a vertical asymptote at x = 2 and a horizontal asymptote at y = -4. What is the equation of the function that models this graph?
Step 1 . Use the equation of the vertical asymptote to create a part of the rational function.
Step 2. Use the equation of the horizontal asymptote to create the second part of the rational function.