Provide the definitions of parallel and perpendicular lines, as well as the relationships between their slopes. Two examples explain the process of finding the equation of either a perpendicular or parallel line to another line through a given point. The graphed lines help visually demonstrate their relationship to each other.
- Give class members several pairs of lines and have them determine whether the pairs are parallel, perpendicular, or neither
- Provide the graph of line that makes one side of a rectangle and have pupils determine the equations for the other three sides
- The resource does not cover the proof portion of the standard, but it does address use of the slopes of parallel and perpendicular lines
- This resource is only available on an unencrypted HTTP website. It should be fine for general use, but don’t use it to share any personally identifiable information
- Explanations use color coding to help highlight where values are substituted
- Examples go through each step in converting from point-slope form to slope-intercept form