Posted by **Matt** on Monday, July 8, 2013 at 10:30pm.

Let y=f(x) be a function with domain=[-7,8] and range=[-12,9]. Find the range of the function y=-f(2x)

- Math -
**Steve**, Tuesday, July 9, 2013 at 10:59am
Can't tell. If f(x) is linear, then just multiply the range by -2 to get [-18,24]

For example, if f(x) = 7/5 x - 11/5

then -f(2x) = 22/5 - 14/5 x

and the range is indeed [-18,24]

But, if f(x) is not linear, say

f(x) = 7/5 x^2 - 403/5 then

-f(2x) = 806/5 - 28/5 x^2

and the range is now [-986/5,-566/5]

## Answer This Question

## Related Questions

- calcius - Determine whether the relation represents a function. If it is a ...
- algebra - Find the domain and range of the relation and determine whether it is ...
- Math - HELP PLEASE!!! I'm having some trouble with this question on my Maths hw...
- math (2nd Try) - You have 6 cups of sugar. It takes 1 cup of sugar to make 24 ...
- precalculus check immediately - suppoe f is a function with domain [1,3]and ...
- Math - You have 6 cups of sugar. It takes 1 cup of sugar to make 24 cookies. The...
- Algebra (Last Question) - I have - to graph each relation - decide if it is a ...
- Math - For the set of ordered pairs, state the domain, range, and determine ...
- algebra - 1 (a) A function passes through the points (0, -5), (1, 0), (2, 7). ...
- Math - What are the domain and range of the function {(0, 2), (-2, 4), (2, 8), (...

More Related Questions