Question

help? If f(x) = x - 4, what does f(3) represent?

The value of (x - 4) when x = 3
The value if x when (x - 4) = 3
The value of 3f(x) when x = 3
The value of f(x) when (x - 4) = 3

Answer 1

The value of (x-4) when x=3 is -1
The value of x when (x-4)=3 is x= 7
The value of 3f(x) when x=3 is 9
The value of f(x) when (x-4)=3 is 7

Answer 2

for the fist one: you replace x with 3 to make (3-4)
2. (x-4)=3 add 4 to the right side to make x=7
3. if x=3 then you multiply 3 and 3 to get 9
4. you do the same thing as 2

Answer 3

i know, but its asking me which answer to choose? @lmeithof

Answer 4

Oops sorry :( the answer would be the first one because when you say f(3), you are keeping the equation the way it is, just turning x into 3

Answer 5

@lonelyflowers

Answer 6

thank you :) @lmeithof

Answer 7

you're welcome :)