Education Technology

• ##### Device
• TI-84 Plus
• TI-84 Plus Silver Edition
• TI-84 Plus C Silver Edition
• TI-84 Plus CE Family
• ##### Software

TI Connect™ CE

# Algebra 1: Points, Lines and Slopes (Oh My!) - IB

by Texas Instruments

#### Objectives

• Students will graph linear functions and determine properties such as slope and y-intercept, describe how both change as the graph is rotated and translated, and understand that the coordinates of a line are the solution set to the equation of the line.
• Students will show that lines with equal slopes are parallel and slopes that are negative reciprocals are perpendicular.
•  Students will try to make a connection with how to understand these topics in IB Mathematics courses and on their final assessments

#### Vocabulary

• Parallel
• Perpendicular
• Reciprocal
• Slope

#### About the Lesson

In this activity, students will use coordinates to better understand that relationship, as well as the relationship between coordinates of points and their quadrant locations, slopes and y-intercepts, and parallel and perpendicular lines.