For this case, the parent function is given by: We apply the following transformation: Expansions and horizontal compressions: The graph of y = f (bx): If 0 <b <1, the graph of y = f (x) expands horizontally by the factor of 1 / b. (It lengthens) Applying the transformation we have: Therefore, the stretch factor is 4, due to: Rewriting: Answer: the equation of the new function is: