Prove the slope criteria for parallel and perpendicular lines and use them to solve geometric problems (e.g., find the equation of a line parallel or perpendicular to a given line that passes through a given point).

Big Idea:
In this student-centered lesson, students work together to construct parallel and perpendicular lines while also writing equations for these lines.

Big Idea:
Students will connect the main ideas from the previous four lessons to write the equations of parallel and perpendicular lines using given information.

Big Idea:
Students reason about Perpendicular Lines with simple concrete examples using Geoboards and extend their reasoning to designing parking lines.

Big Idea:
For students to write the equation of a line parallel to or perpendicular to a line and passing through a given point using different representations of linear functions.

Big Idea:
Through graphing students will deduce that the slopes of parallel lines are the same and the slopes of perpendicular lines are opposite reciprocals.

Big Idea:
Test time! Students review and then take the unit assessment, hopefully demonstrating their knowledge of coordinate geometry, as well as their ability to organize and justify their work.

Big Idea:
Students will fold away to discover the relationship between a focus, directrix and parabola as well as play Jeopardy to review key topics in Line-sanity unit including alternate interior angles.