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

11551 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve the following equation: x^2 - 5x - 14 = 0


Describe and explain the change in the shape of the graph y=x^2 and y=x^2 + 2.


Write an equation for a line parallel to 2y = 4x - 10


Simplify: 5a + 2 – a + 9


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