(x)\). To find an inverse function, form an equation by giving the output value a name using a letter (such as \(y\)), then rearrange the equation to make \(x\) the subject.

The equation of a straight line can also be written in the form \(f(x) = mx + c\). This is called function notation and is just another way of expressing the relationship between two variables.

$40+$4 = $44 The equation for finding this answer is ... students see that they can generalize the results. Understand and use function notation (for example, f(x) denotes the output of f ...