What is the stretch factor (the value of a) for the equation of the graph in part (c) of problem 9-47? Write the exact equation of the function. Homework Help ✎
Using the equation that you found before, what value of y did you get for x = 0?
What do you need to multiply that by to get the appropriate value?
The stretch factor is 2.
The equation is y = −2(x + 2)2(x − 1).