👉Learn how to solve a system of equations by substitution. To solve a system of equations means to obtain common values of ...

A function machine is a way of writing rules using a flow diagram. The equation \(3j - 6 = 9\) can be shown on a function machine by writing out the functions that have been applied to \(j\) in the ...

Click to explore updated revision resources for GCSE Maths: Functions, with step-by-step slideshows, quizzes, practice exam questions, and more! A function machine is a way of writing rules using a ...

👉Learn how to solve a system (of equations) by elimination. A system of equations is a set of equations which are ...