How do you find $k(4-x)$ given $k(x)=4x-4$ ?

Question

2349 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-08-27T23:59:00

$k(4-x) = 12-4x$

Given:

$k(x) = 4x-4$

The variable $x$ can be replaced by any other variable, e.g. $t$ ...

$k(t) = 4t-4$

Now substitute $4-x$ for $t$ to find:

$k(4-x) = 4(4-x) - 4$

$= 16-4x-4$

$= 12-4x$

How do you find k(4-x)k(4-x) given k(x)=4x-4k(x)=4x-4?