# Linear Functions - Slope of a Line

## introduction

Mobile Devices:

Tablets and smartphones can access the Slope of a Line Animations on YouTube.

Workbook:

Download and print the Slope of a Line Workbook.

Interactive Graphs:

All of the Slope of a Line Graphs are interactive on Desmos.

Lesson Transcript:

All of the Slope of a Line Notes are available as a video transcript.

Topics Covered:

- Interpreting how the numerical value of slope relates to the steepness of a line
- zero and undefined slopes
- using the slope formula to solve problems
- Problem solving (using slope to solve for an unknown, graphing the motion of a toy car)

Curriculum Connection: Relations & Functions 3.1 - 3.7, 3.9

Videos: Desktop computers and laptops require Adobe Flash Player and the printable notes require Adobe Reader. Smartphones and tablets will not be able access the Flash content on this page (resulting in empty space below). Use the YouTube alternative.

# Interactive

## slope of a line

### 2 Apps

App 1 - Dynamic Slope Calculator: As the endpoints of the line segment are moved, the slope of the line is automatically calculated.

Teaching Tip: The panel showing the steps may be covered so students can practise the slope calculation on their own. One strategy for using this app with your class is to set a line (with the steps panel covered), tell students to calculate the slope of the line shown, then reveal the steps in the app so they can check their work. Also, the "show triangle" button toggles the right triangle showing rise and run.

App 2 - Drawing a Line Given the Slope and a Point: Each question in this app gives the slope of a line, and a point on the line. As you drag the cursor over the grid, it will change color over points that exist on the line (grid verticies only). Click to lock in the point. When all possible points on the grid are locked in, the line will automatically be drawn.