Find the inverse of y = 2x+1/ x-1

the aim of finsing the inverse is making x the subject. To start we need to multiply both sides by: (x-1), giving us:y(x-1) = 2x+1now we need to expand the brackets:yx - y = 2x+1now gather all the x components on the same side:yx-2x = 1+ynow factorise the left hand side:x(y-2) = 1+ynow make x the subject, giving us:x = 1+y/ y-2therefore, the inverse is written in terms of x, which gives us:f(x)^-1 = 1+y/y-2

AS
Answered by Amelia S. Maths tutor

11503 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Write (x-2)(x+4)=10 in the form ax^2 + bx + c = 0 and work out the values of a, b and c


Given the functions f(x) = (x + 2)/9 and g(x) = x^3 + 6, find fg(x).


Show that the two lines are parallel: L1: 4y = 24x +12, L2: 2y + 13 = 12x


Factorise and solve for the solutions of X in the equation X^2 + 8X +15?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning