Going from graph to rule. To determine the rule for a given linear graph, locate two points on the graph and use these to calculate the gradient and establish the \(y\)-intercept. Two commonly used ...

Linear functions are used to model a broad range of real-world problems. The ability to solve linear equations and inequalities is an essential skill for analysing these models. This section covers ...

Revise how to plot a linear equation graph. Learn how to read x and y coordinates from a graph in this BBC Bitesize maths KS3 guide.

4.Note the resulting new function’s points on a graph. For example, consider two linear functions: f(x) = 2x + 1. g(x) = x – 1. By graphing both functions and adding or subtracting their y-values at ...

Graphs of two or more straight lines can be used to solve simultaneous linear equations. The graph of a straight ... When one coordinate is given, the second can be read from the graph. To ...