f(x) = 5x − 12. (i) Calculate f(4). (ii) Find f( x + 1). Give your answer in the form ax + b .

i) (5 x 4) -12 = 8 ii)  5(x + 1) - 12 5x + 5 -12 5x - 7

SM
Answered by Santiago M. Maths tutor

4933 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Complete this substitution question: x^​3 - 25 = 103 - x^​3


Express 56 as the product of its prime factors


Solve the simultaneous equation: 2x + 3y = 6, 3x + 2y = 5.


Solve the curve xy=2 and x+y=3


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