Problem 4. Below is a graph of the function t(x) which is a linear transformation of the function y = Ixl. Write an equation for r(x). b. What is the vertex? 5 c. Describe the domain and range. d. Explain how you can determine the vertex from your equation and why that is the highest (maximum) point on the graph. e. What number in your equation explains the steepness and direction of the graph? -5