## Indices

Want to download the Indices revision notes in PDF format? [mathjax] What are Indices? An index is a power of numbers that indicate how many times it has been multiplied by itself. Here are examples indices: $${2^9},{x^3},x^{1/2}$$ and others. In $${2^9}$$, wherein the small number, 9, above is the index, it indicates that 2 will be …

## Algebraic Expression

Want to download the Algebraic Expression revision notes in PDF format? What is an Algebraic Expression? In Algebra, we commonly see x, y and others. Why do we use letters? How can we solve it? An algebraic expression is a combination of integer constants, variables, exponents and algebraic operations such as addition, subtraction, multiplication and …

## Solving Equations – Trial, Improvement & Iteration

Want to download the Solving Equations – Trial, Improvement & Iteration revision notes in PDF format? Solving Equations There are many ways to find the value of a variable. However, let’s study solving for the unknown using trial, improvement, and iteration. Trial and Improvement This is a method of finding the value of an unknown …

## Solving Inequalities – Two Variable & Quadratic

Solving Inequalities Do you want to know more about inequalities? What are inequalities? How can you solve inequalities? Inequalities are equations where the values are not equal. It uses the symbols not equal to (≠), greater than (>), greater than or equal to (≥), less than(<) or less than or equal to (≤). The solution …

## Travel Graphs – Distance & Time

Speed, Distance and TimeThe following is a basic but important formula which applies when speed is constant (in other words the speed doesn’t change):Speed = distancetime Remember, when using any formula, the units must all be consistent. For example speed could be measured in m/s, distance in metres and time in seconds.If speed does change, …

## Graphs

Equations of straight lines are in the form y = mx + c (m and c are numbers). m is the gradient of the line and c is the y-intercept (where the graph crosses the y-axis).