Question

What is the range of the function f(x)=3x−1f(x)=3x-1 when the domain is {-1, 0, 1}?

Answer 1

f(x)=3x−1

domain is {-1, 0, 1}

3(-1) -1 = -4
3(0) - 1 = -1
3(1) - 1 = 2

Range { -4,  -1,  2}