### Home > CCA2 > Chapter 8 > Lesson 8.1.3 > Problem 8-54

8-54.

What is the stretch factor for the equation of the graph in part (c) of problem 8-45? Write the exact equation of the function.

Using the factors, you can work backwards to find the beginning of the equation. The double root at gives you

*gives you (*

*). Substitute the point (*

*.*

The stretch factor is .