Find f(x) when x = 4
Subtitute the x with 4 in the function
f(x) = 3x + 2
f(4) = 3(4) + 2
f(4) = 12 + 2
f(4) = 14
The value of f(x) when x = 4 is 14
Find f(x) when x = -1
Subtitute the x with -1 in the function
f(x) = 3x + 2
f(-1) = 3(-1) + 2
f(-1) = -3 + 2
f(-1) = 1
The value of f(x) when x = -1 is 1