Texas Instruments: Does Your Euler Line "Wiggle"?

This is an introductory lesson on graphing parallel and perpendicular lines. The students will have a good visual on how these lines relate to each other. This also illustrates how to determine equations in slope-intercept form of a line...

Cabri Jr. activity to study the properties of parallel lines.

In this activity, students will explore the proportional relationships involved in multiple parallel lines being cut by transversals. These relationships are approached through exploration of a sail design problem, where students are to...

In this activity, students create parallel lines and a transversal, and study the properties of the lines and their angles.

How does the vertical line test help you decide if the graph of an equation is a function? The instructor draws a graph and then draws the line of the equation. She demonstrates how to use the vertical line test to determine if the graph...

This lesson introduces students to Activity Center and is intended to help students interpret whether lines are parallel or perpendicular. [Requires Adobe Reader.]

Create an ellipse using an envelope of lines with Cabri Jr.

In this activity, students explore the equations of lines written in the form: y = mx + b. They move points defining the lines, and view the related changes in the parameters of the equations.

This activity will help students write equations of lines using two points. This activity will also help students review how to plot ordered pairs.

In this activity, students draw a line and determine its slope. They understand that the slope of a line is actually the ratio of rise over run.