f(x)=3x+c g(x)=cx+8 fg(x)=6x+d Work out c and d.

fg(x) means f of g of x

fg(x) = 3(cx+8) + c = 3cx + 24 + c = 6x + d

3cx = 6x 3c=6 c=2

24 + c = d 24+2=d=26

Answered by Ceri F. Maths tutor

2887 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

What is 125^(-2/3)?


Solve 5x^2 - 4x - 3 =0. Give answers to 3 significant figures


How can i understand fractions?


The probability a student in a school wears glasses is 3/7. There are 164 students who DON'T wear glasses. Find the number that wear glasses.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences