Question

Given f(x)=2x-1
find the domain value if the range value is 4.

Answer 1

5/2

Explanation:

You want to find x when f(x) = 4

4 = 2x -1

5 = 2x . . . . . add 1

5/2 = x . . . . . divide by 2

The input corresponding to an output of 4 is 5/2.