Answer:
f-¹(x) = [4(3 - 2x)]/15 .
Step-by-step explanation:
f(x) = y = [3(4 - 5x)]/8
f-¹(x) is given as;
x = [3(4 - 5y)]/8
multiplying both sides by 8 gives;
8x = 3(4 - 5y)
8x = 12 - 15y
15y = 12 - 8x
Dividing both sides by 15 gives
y = [4(3 - 2x)]/15
hence f-¹(x) = [4(3 - 2x)]/15
