Question

What is the domain of f(x) = 3x – 2?

x
x < 0
x
x is a real number

Answer 1

all real numbers

last choice (x is a real number)

Answer 2

The correct answer is "x is a real number"

Explanation:

The domain of a function is the set of possibles values that make the function work.

In case of linear function, the domain is all real number.

f(x) = 3x – 2 is a linear function, so the domain is all real number.