How can I find the value of f(x) when x=3?

Question

The problem is f(x)=1/3x - 2

Answer 1

For these types of problems, you will want to use substitution. Basically just replace any values of x in the equation with the value of x provided in the problem.

f(x) = (1/3)x - 2

f(x) = (1/3)(3) - 2 --> Here is the step in which you do the substitution.

f(x) = 1 - 2 = -1