Answer:
The input x = 8/3 results in a zero (0) function output.
Explanation:
Write f(x) = (3/2)x - 4 and set this equal to 0: f(x) = (3/2)x - 4 = 0.
Solve (3/2)x - 4 = 0 for x by adding 4 to both sides: (3/2)x = 4.
Finally, multiply both sides by the inverse of (3/2), to isolate x:
(2/3)(3/2)x = (2/3)4 = 8/3.
The input x = 8/3 results in a zero (0) function output.