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Explore basic graph concepts and understand them better

By Murray Bourne, 28 Nov 2011

slopes of parallel lines
Screen shot: interactive graph

The basic concepts in plane geometry (like distance and slope) are vital for understanding later math topics (like calculus).

Many students get get confused with the formulas used in this topic.

I recently updated the introductory pages in the Plane Analytic Geometry chapter in IntMath. Each one now has an interactive graph that helps you to understand how the formula works.

Check them out:

Distance Formula

Gradient of a Line, and Inclination

Parallel Lines

Perpendicular Lines

Please tell me what you think of the interactive JSXGraphs on those pages. Any improvements you can suggest?

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HTML: You can use simple tags like <b>, <a href="...">, etc.

To enter math, you can can either:

  1. Use simple calculator-like input in the following format (surround your math in backticks, or qq on tablet or phone):
    `a^2 = sqrt(b^2 + c^2)`
    (See more on ASCIIMath syntax); or
  2. Use simple LaTeX in the following format. Surround your math with \( and \).
    \( \int g dx = \sqrt{\frac{a}{b}} \)
    (This is standard simple LaTeX.)

NOTE: You can mix both types of math entry in your comment.


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