If f(x) = 4x - 7 and f(c) = 9, find the value of c.

To find the value of c, we need to find the value of x in the following: 4x - 7 = 9.

Add seven to both sides: 4x = 16

Divide by 4: x = 4

AB
Answered by Andrew B. Maths tutor

5952 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Find the values of a, b and c in the equation: (5x + 3)(ax + b) = 10x^2 + 11x + c.


Fred is reshaping his garden. He decides to make into a right-angled triangle ABC. The length AB= 5m and the length BC= 12 What is the length of AC?


Write x^2 + 4x - 16 in the form (x+a)^2-b


Rationalise the denominator of 14 / 2 + root3


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences