Which is one of the transformations applied to the graph of f(x)=x^to change it into the graph of g(x)=4x^+24x+30
Accepted Solution
A:
Problem: Find one of the transformations applied to the parent function f(x)=x^2 to change it into the graph g(x)=4x^2+24x+30.
Steps 1. Use completing square to transform g(x) into vertex form: [tex]g(x)=4x^2+24x+30[/tex] [tex]=4(x^2+6x+7.5)[/tex] [tex]=4((x+3)^2-9+7.5)[/tex] [tex]= 4((x+3)^2 - 1.5)[/tex]
2. Match above function g(x) with a transformed function of f(x), with vertical stretch factor a, horizontal translation h, and vertical translation k: [tex]g(x)=a f(x-h) + k[/tex]
3. By comparison, we see that a=4, h=-3 k=4(-1.5)=-6
So the three steps (any one of which should do for the answer) are: translate left 3 units vertical stretch 4 units vertical translation -6 units.