Question

If the graph of the function h defined by `h (x)= 5x^2-1` is translated vertically downward by 4 units, it becomes the graph of a function f. How do you find the expression for f (x)?

Answer 1

Well, It looks to me like you can just subtract 4 from each side...

Explanation:

`h(x) - 4 = 5x^2 - 1 -4`

`f(x) = 5x^2 - 5 = 5(x^2 - 1)`

How does that look?