Answer:
f(x)^-1 = [tex]\frac{1}{28} x + \frac{3}{4}[/tex]
Step-by-step explanation:
f(x) = (4x - 3) / 7
y = (4x - 3) / 7
x = (4y - 3) / 7
x / 7 = 4y - 3
x/7 + 3 = 4y
y = [tex]\frac{1}{28} x + \frac{3}{4}[/tex]
