Mark (√) against the correct answer in the following:

Let f : Q → Q : f(x) = (2x + 3). Then, f - 1(y) = ?


f(x) = 2x + 3


⇒y = 2x + 3


x⟺y


⇒x = 2y + 3


⇒x - 3 = 2y


⇒


x⟺y


⇒

1