A frequency polygon is a line graph that is based on a frequency table. Frequency polygons are similar to a histograms. Here is an example below.

# Author: Nouri Dib

# Inverse Functions

To find the inverse of a function, all you need to do is follow a few basic steps. Below are some examples with increasing level of complexity. […]More…

# Trig Ratios – Must Know Values

There are many ways that allow you to work out the values for the trigonometric ratios of the most common angles (0°, 30°, 45°, 60° and 90° […]More…

# Finding the probability of an Event using Outcomes

Sometimes, we are asked to find the probability of an event happening but we are not given the list of all possible outcome. This means that as […]More…

# Box Plots

Box plots are used to represent the 5 data items listed below graphically, which are: Lowest value in the dataset Lower Quartile (LQ) Median Upper Quartile (UQ) […]More…

# Composite Functions

Composite functions are functions that are combined together. This article will present 3 examples showing you how to work with composite functions. EXAMPLE I EXAMPLE II EXAMPLE […]More…

# Rationalise the Denominator

Rationalise the denominator means eliminating the SURD from the denominator. Here are a few examples showing how to do this operation. A full video lesson on working […]More…

# By Substitution when Elimination Fails

Sometimes solving simultaneous equations cannot be done using the elimination method. For these – usually complex – cases, you can use substitution. Here is an example to […]More…

# 3D Shapes

Below are the most common 3D shapes you will come across and with 3D shapes, you need to be able to work out the volume of these […]More…

# Circle Theorems (IV – VII)

This article is a continuation of part 1 on circle theorems and covers theorems 4 to 7.