Line through two points

An exploration of the equation of a straight line passing through two points using similar triangles.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Andy Kemp

Topic:  Mathematics

Tags  Points and lines

Being able to find the equation of a straight line that passes through two given points is an important skill.  This activity explores the method for finding the formula that gives the equation of this straight line and helps students understand why it works.

There is a nine-page TI-Nspire document and notes for teachers and students.

Publisher specific license