Sketching by completing the square
Videos in this series
Please select a video from the same chapter
Video Images
Video Images
Chapters
Introduction
Sketching by completing the square
Parabolas and other graphs
Year 10
This video is the second in a series of videos which show how to sketch parabolas. This video looks at recapping the work on completing the square. Knowing how to complete the square means we can use the turning point form to find the turning point. This also allows us to solve equations to find the x-axis intercepts. I explain how the knowledge of DOPS and completing the square lets us know if we can find solutions to equations. I also look at how completing the square form can also allow us to find the y-axis intercepts. We can sketch any quadratic if we know four key pieces of information: * Turning point * y-axis intercept * Two x-axis intercepts. There are some practical examples and all the theory is fully explained. I hope the video is useful to people!
Published: Oct. 17, 2018
Length: 19 mins and 31 seconds
Lesson notes

There are currently no lesson notes at this time to download. I add new content every week.
Exam resources

There are currently no associated exam questions for this topic.

Video tags

quadratic equation (concepts/theories) completing the square free math videos completing the square quadratic equations sketching parabolas with completing the square sketching videos Year 10 Maths sketching parabolas from quadratic equations sketching parabolas by completing the square sketching parabolas in turning point form
LEGAL STUFF

Where videos relate to VCE and I have used VCAA questions the following should be noted:
VCE Maths exam question content used by permission, ©VCAA. The VCAA is not affiliated with, and does not endorse, this video resource. VCE® is a registered trademark of the VCAA. Past VCE exams and related content can be accessed at www.vcaa.vic.edu.au