Answer:
-12
Step-by-step explanation:
Take the inverse function, and modulate it:
[tex] {f}^{- 1} (x) = \frac{4}{3} x - 12[/tex]
By taking x = 0, we can see that the y-intercept is clearly -12:
[tex] \frac{4}{3} (0) - 12 = - 12[/tex]
Therefore, the y-intercept is -12.
