Question

if f(x) = x − 4, what does f(3) represent? the value of (x − 4) when x = 3 the value of x when (x − 4) = 3 the value of 3f(x) when x = 3 the value of f(x) when (x − 4) = 3

Answer 1

f(x)=x-4
f(3)=3-4=-1

(x-4)=3
x=7

3(f(x))=3(x-4)
3(f(3))=3(3-4)=-3

f(x)=7

Answer 2

f(3) represents the value of (x − 4) when x = 3.

Explanation:

Given function,

`f(x)=x-4`

After Substituting x = 3 in the above function,

f(3) would represents the value of f(x) when x = 3,

In the above function, the value of f(x) is (x-4)

Thus, we can say that,

F(3) represents the value of (x-4) when x = 3,

First option is correct.