Question

let f: {(2,3),(3,4),(4,5),(5,6)} where f(x)= 3x+2, then find f-1​

Answer 1

Answer:

f = {(2,3),(3,4),(4,5),(5,6)}

f^-1 = {(3,2),(4,3),(5,4),(6,5)}

$f(x) = 3x + 2 \\ let \: y = 3x + 2 \\ 3x = y - 2 \\ x = \frac{y - 2}{3} \\ therefore \: {f}^{ - 1}( x) = \frac{x - 2}{3}$

Answer 2

Answer:

this is correct..........................