Question

If f(x) = 5x – 4 and g(x) = 4x + 1, find (f – g)(x).

A. 9x – 5
B. 9x – 3
C. 5 – x
D. x – 5

Answer 1

(f – g)(x) = f(x) - g(x) = (5x – 4) - (4x + 1)= 5x - 4 - 4x - 1 = x - 5

Answer is D. (x-5).

Answer 2

The required function is$(f - g)(x) = (x - 5).$

What is a function?

A function relates the domain set to the range set. For any particular function, for a value in the domain set, there must be a value in the range set.

Given, $f(x) = 5x - 4$

$g(x) = 4x + 1$

Therefore the required function,

$(f - g)(x) \\= f(x) - g(x)\\= (5x - 4) - (4x + 1)\\= (x - 5)$

Learn more about a function here:

https://brainly.com/question/16588824

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