# SL AA – Straight Lines

##### Plotting diagonal lines

##### Vertical and horizontal lines

##### Finding the gradient

##### Equation of a straight line

##### Parallel lines

##### Equation of a line from 2 points (1)

##### Equation of a line from 2 points (2)

##### ax+by+d=0

## Google form - Straight lines (basic)

## Google Form - Diagonal line equations

## Google Form - Straight line coordinates

## Google Form - Straight line extension

## Google Form - 3 ways

Writing a straight line in 3 different ways.

## y-y1=m(x-x1) Form

GeoGebra applet.

## SSDD - Straight Lines

Same surface different deep structure on y=mx+c.4 variants.

## Kahoot - Straight Lines

## Desmos Slope review

Review of slope by Becky Hall.

## Desmos Polygraph Lines

With Polygraph, Desmos provides tools for developing informal language into formal vocabulary. Because words should result from a need to describe our worldâ€”this is where they gain their power.

## Desmos Polygraph Lines 2

This activity follows up on Polygraph: Lines, using the discussions (and students’ informal language) in that activity to develop academic vocabulary related to the graphs of linear functions.

## Desmos Land the Plane

In this activity, students practice finding equations of lines in order to land a plane on a runway. Most of the challenges are well-suited to slope-intercept form, but depending on the goals of an individual class or student they are easily adapted to other forms of linear equations.

## Desmos Slopes of Parallel and Perpendicular Lines

In this activity, students use sliders to investigate the slopes of parallel and perpendicular lines. By Brent Smith.

## Desmos Parallel and Perpendicular Lines

By Bob Lochel

## Desmos Put the Point on the Line

This activity’s focus is slope. The goal is to sharpen studentsâ€™ focus on slope. In particular, the activity asks students to estimate first, then to calculate, then to notice proportionality as they place points on an imaginary line.

## Desmos Missile Attack

Using linear equations to connect points. By Emily Sliman.