singaporeolevelmaths

Simple Tips for Better Maths Results!

straight line graphs

E-Maths: General Equation and Graphs of Line

Line is part of us, in almost everything you see.

You must understand

  • what equation of line is,
  • how to find gradient,
  • how to find the x and y intercepts,
  • what's the relationship between a pair of parallel lines, (perpendicular lines are out of syllabus for E-Maths 4016)
  • how to write the equation of line given the diagram and lastly,
  • how to draw a line.

Do you love this topic on straight lines? Leave me your thoughts and reasons for your love/hate relationship toward lines.

Maths Tuition Centre Singapore

A-Math: How to Sketch Modulus Graph [video]

Modulus Graph Sketching_Page_01

This morning, I received an email from a student on asking how to draw a modulus graph with and without boundary condition.

What is boundary condition?
It is usually the range of values of x (otherwise known as domain) for the graph.

Though I have written a similar post in 2009 here, I feel that a video will show you clearly the step by step and important points to consider. Note that my drawing isn't perfect, afterall it's a freehand draw on my tablet, so you got to bear with my 'not so straight' lines :)

The video is about 7 minutes long. Around 6min 30s, I've included a bonus question to challenge yourself. Go ahead and answer it on the comment section.

Click here to view the video: http://www.youtube.com/watch?v=eTdo_zK9XLk