Parabolas and other graphs
Essential Mathematics Year 10
Introduction
The learning for the lesson
Recap
Footie or soccer?
Letters are really just in the dinner queue for numbers
Example 1
BIDMAS or BODMAS?
Examples of how to use BIDMAS
Formula, Substitute and Solve (FSSSSSSS)
Example 2
Example 3
A slightly harder example
Please subscribe!
We have spent a lot of time looking at how to use algebra to factorise and solve quadratics. We have completed the square, we have used the quadratic equation and we have used the T-Method. This has led to this series of videos where we now use all the information gained to sketch the graphs.
We need to make sure that, for all quadratics, we have access to tools to find the x-intercepts, y-intercepts and the turning point. Once we have these four pieces of information we can confidently sketch any quadratic equation.
In this video we recap how to use the T-Method to factorise. There are a number of examples in how to solve the quadratic and find the important points.
The video is a little long, but it covers all the things you need to know.
There are no current errors with this video ... phew!
Click the link below to download your notes.
If your lesson notes are not downloading this is due to your school blocking access to the notes server. If you try connecting at home, or using a different computer which is not controlled by your school, you will be able to download the notes.
Video tags
quadratic equation
algebra 2
sketching quadratics
factorising quadratics by grouping
factorising quadratics
factorising maths
factorising algebraic expressions
factorising quadratic expressions
Finding intecepts
solving equations
finding intercepts from an equation
finding intercepts and testing for symmetry
finding intercepts of a quadratic function